Does model serving imply spamming docker instances until seg faults? #260

Closed
Closed
Does model serving imply spamming docker instances until seg faults?#260

Description

@yifeim
yifeim
opened on Jun 27, 2018

System Information

  • Framework (e.g. TensorFlow) / Algorithm (e.g. KMeans): Mxnet / BYOM
  • Framework Version: 1.1
  • Python Version: 3.6
  • CPU or GPU: both
  • Python SDK Version: 1.4.1
  • Are you using a custom image: Yes - custom algorithm on mxnet estimator.

Describe the problem

My remote deployment log shows 4+ simultaneous executions of the same codes with 1 segmentation fault. The model gets served eventually. Should I be concerned?

The seg fault originates from mxnet and immediately after container_support.serving - importing user module. However, due to the mysterious parallel execution of things, I am not sure if the sequence of events are from the same process.

The only feasible explanation to me is that model serving keeps spamming docker instances until seg fault. However, I did not seem to find such descriptions in the documentations.

Minimal repro / logs

[2018-06-27 07:20:09 +0000] [103] [INFO] Booting worker with pid: 103
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
2018-06-27 07:20:09,981 INFO - container_support.serving - creating Server instance
2018-06-27 07:20:10,005 INFO - container_support.serving - importing user module
Segmentation fault: 11
Stack trace returned 10 entries:
[bt] (0) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2a9e78) [0x7f531f03be78]
[bt] (1) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2909e8e) [0x7f532169be8e]
[bt] (2) /lib/x86_64-linux-gnu/libc.so.6(+0x354b0) [0x7f53530414b0]
[bt] (3) /usr/bin/python() [0x513ef4]
[bt] (4) /usr/bin/python() [0x57d7e8]
[bt] (5) /usr/bin/python() [0x518248]
[bt] (6) /usr/bin/python() [0x464e67]
[bt] (7) /usr/bin/python(_PyObject_GC_NewVar+0xbe) [0x518d0e]
[bt] (8) /usr/bin/python(PyTuple_New+0xff) [0x58456f]
[bt] (9) /usr/bin/python() [0x52116b]
[2018-06-27 07:20:10 +0000] [110] [INFO] Booting worker with pid: 110
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
mxnet 1.1.0

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      , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
       blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

      Skip to content
      Does model serving imply spamming docker instances until seg faults? #260
      Closed
      Closed
      Does model serving imply spamming docker instances until seg faults?#260
      Description
      @yifeim
      yifeim
      opened on Jun 27, 2018
      System Information
      • Framework (e.g. TensorFlow) / Algorithm (e.g. KMeans): Mxnet / BYOM
      • Framework Version: 1.1
      • Python Version: 3.6
      • CPU or GPU: both
      • Python SDK Version: 1.4.1
      • Are you using a custom image: Yes - custom algorithm on mxnet estimator.
      Describe the problem
      My remote deployment log shows 4+ simultaneous executions of the same codes with 1 segmentation fault. The model gets served eventually. Should I be concerned?
      The seg fault originates from mxnet and immediately after container_support.serving - importing user module. However, due to the mysterious parallel execution of things, I am not sure if the sequence of events are from the same process.
      The only feasible explanation to me is that model serving keeps spamming docker instances until seg fault. However, I did not seem to find such descriptions in the documentations.
      Minimal repro / logs
      [2018-06-27 07:20:09 +0000] [103] [INFO] Booting worker with pid: 103
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
2018-06-27 07:20:09,981 INFO - container_support.serving - creating Server instance
2018-06-27 07:20:10,005 INFO - container_support.serving - importing user module
Segmentation fault: 11
Stack trace returned 10 entries:
[bt] (0) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2a9e78) [0x7f531f03be78]
[bt] (1) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2909e8e) [0x7f532169be8e]
[bt] (2) /lib/x86_64-linux-gnu/libc.so.6(+0x354b0) [0x7f53530414b0]
[bt] (3) /usr/bin/python() [0x513ef4]
[bt] (4) /usr/bin/python() [0x57d7e8]
[bt] (5) /usr/bin/python() [0x518248]
[bt] (6) /usr/bin/python() [0x464e67]
[bt] (7) /usr/bin/python(_PyObject_GC_NewVar+0xbe) [0x518d0e]
[bt] (8) /usr/bin/python(PyTuple_New+0xff) [0x58456f]
[bt] (9) /usr/bin/python() [0x52116b]
[2018-06-27 07:20:10 +0000] [110] [INFO] Booting worker with pid: 110
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
mxnet 1.1.0

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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

          Skip to content
          Does model serving imply spamming docker instances until seg faults? #260
          Closed
          Closed
          Does model serving imply spamming docker instances until seg faults?#260
          Description
          @yifeim
          yifeim
          opened on Jun 27, 2018
          System Information
          • Framework (e.g. TensorFlow) / Algorithm (e.g. KMeans): Mxnet / BYOM
          • Framework Version: 1.1
          • Python Version: 3.6
          • CPU or GPU: both
          • Python SDK Version: 1.4.1
          • Are you using a custom image: Yes - custom algorithm on mxnet estimator.
          Describe the problem
          My remote deployment log shows 4+ simultaneous executions of the same codes with 1 segmentation fault. The model gets served eventually. Should I be concerned?
          The seg fault originates from mxnet and immediately after container_support.serving - importing user module. However, due to the mysterious parallel execution of things, I am not sure if the sequence of events are from the same process.
          The only feasible explanation to me is that model serving keeps spamming docker instances until seg fault. However, I did not seem to find such descriptions in the documentations.
          Minimal repro / logs
          [2018-06-27 07:20:09 +0000] [103] [INFO] Booting worker with pid: 103
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
2018-06-27 07:20:09,981 INFO - container_support.serving - creating Server instance
2018-06-27 07:20:10,005 INFO - container_support.serving - importing user module
Segmentation fault: 11
Stack trace returned 10 entries:
[bt] (0) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2a9e78) [0x7f531f03be78]
[bt] (1) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2909e8e) [0x7f532169be8e]
[bt] (2) /lib/x86_64-linux-gnu/libc.so.6(+0x354b0) [0x7f53530414b0]
[bt] (3) /usr/bin/python() [0x513ef4]
[bt] (4) /usr/bin/python() [0x57d7e8]
[bt] (5) /usr/bin/python() [0x518248]
[bt] (6) /usr/bin/python() [0x464e67]
[bt] (7) /usr/bin/python(_PyObject_GC_NewVar+0xbe) [0x518d0e]
[bt] (8) /usr/bin/python(PyTuple_New+0xff) [0x58456f]
[bt] (9) /usr/bin/python() [0x52116b]
[2018-06-27 07:20:10 +0000] [110] [INFO] Booting worker with pid: 110
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
mxnet 1.1.0

          Activity
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              None yet
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              Does model serving imply spamming docker instances until seg faults? #260
              Closed
              Closed
              Does model serving imply spamming docker instances until seg faults?#260
              Description
              @yifeim
              yifeim
              opened on Jun 27, 2018
              System Information
              • Framework (e.g. TensorFlow) / Algorithm (e.g. KMeans): Mxnet / BYOM
              • Framework Version: 1.1
              • Python Version: 3.6
              • CPU or GPU: both
              • Python SDK Version: 1.4.1
              • Are you using a custom image: Yes - custom algorithm on mxnet estimator.
              Describe the problem
              My remote deployment log shows 4+ simultaneous executions of the same codes with 1 segmentation fault. The model gets served eventually. Should I be concerned?
              The seg fault originates from mxnet and immediately after container_support.serving - importing user module. However, due to the mysterious parallel execution of things, I am not sure if the sequence of events are from the same process.
              The only feasible explanation to me is that model serving keeps spamming docker instances until seg fault. However, I did not seem to find such descriptions in the documentations.
              Minimal repro / logs
              [2018-06-27 07:20:09 +0000] [103] [INFO] Booting worker with pid: 103
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
2018-06-27 07:20:09,981 INFO - container_support.serving - creating Server instance
2018-06-27 07:20:10,005 INFO - container_support.serving - importing user module
Segmentation fault: 11
Stack trace returned 10 entries:
[bt] (0) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2a9e78) [0x7f531f03be78]
[bt] (1) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2909e8e) [0x7f532169be8e]
[bt] (2) /lib/x86_64-linux-gnu/libc.so.6(+0x354b0) [0x7f53530414b0]
[bt] (3) /usr/bin/python() [0x513ef4]
[bt] (4) /usr/bin/python() [0x57d7e8]
[bt] (5) /usr/bin/python() [0x518248]
[bt] (6) /usr/bin/python() [0x464e67]
[bt] (7) /usr/bin/python(_PyObject_GC_NewVar+0xbe) [0x518d0e]
[bt] (8) /usr/bin/python(PyTuple_New+0xff) [0x58456f]
[bt] (9) /usr/bin/python() [0x52116b]
[2018-06-27 07:20:10 +0000] [110] [INFO] Booting worker with pid: 110
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
mxnet 1.1.0

              Activity
              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
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                  None yet
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

                  Skip to content
                  Does model serving imply spamming docker instances until seg faults? #260
                  Closed
                  Closed
                  Does model serving imply spamming docker instances until seg faults?#260
                  Description
                  @yifeim
                  yifeim
                  opened on Jun 27, 2018
                  System Information
                  • Framework (e.g. TensorFlow) / Algorithm (e.g. KMeans): Mxnet / BYOM
                  • Framework Version: 1.1
                  • Python Version: 3.6
                  • CPU or GPU: both
                  • Python SDK Version: 1.4.1
                  • Are you using a custom image: Yes - custom algorithm on mxnet estimator.
                  Describe the problem
                  My remote deployment log shows 4+ simultaneous executions of the same codes with 1 segmentation fault. The model gets served eventually. Should I be concerned?
                  The seg fault originates from mxnet and immediately after container_support.serving - importing user module. However, due to the mysterious parallel execution of things, I am not sure if the sequence of events are from the same process.
                  The only feasible explanation to me is that model serving keeps spamming docker instances until seg fault. However, I did not seem to find such descriptions in the documentations.
                  Minimal repro / logs
                  [2018-06-27 07:20:09 +0000] [103] [INFO] Booting worker with pid: 103
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
2018-06-27 07:20:09,981 INFO - container_support.serving - creating Server instance
2018-06-27 07:20:10,005 INFO - container_support.serving - importing user module
Segmentation fault: 11
Stack trace returned 10 entries:
[bt] (0) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2a9e78) [0x7f531f03be78]
[bt] (1) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2909e8e) [0x7f532169be8e]
[bt] (2) /lib/x86_64-linux-gnu/libc.so.6(+0x354b0) [0x7f53530414b0]
[bt] (3) /usr/bin/python() [0x513ef4]
[bt] (4) /usr/bin/python() [0x57d7e8]
[bt] (5) /usr/bin/python() [0x518248]
[bt] (6) /usr/bin/python() [0x464e67]
[bt] (7) /usr/bin/python(_PyObject_GC_NewVar+0xbe) [0x518d0e]
[bt] (8) /usr/bin/python(PyTuple_New+0xff) [0x58456f]
[bt] (9) /usr/bin/python() [0x52116b]
[2018-06-27 07:20:10 +0000] [110] [INFO] Booting worker with pid: 110
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
mxnet 1.1.0

                  Activity
                  Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
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                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    No labels
                    No labels
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                      No milestone
                      Relationships
                      None yet
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                      No branches or pull requests
                      Issue actions
                      
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                      Skip to content
                      Does model serving imply spamming docker instances until seg faults? #260
                      Closed
                      Closed
                      Does model serving imply spamming docker instances until seg faults?#260
                      Description
                      @yifeim
                      yifeim
                      opened on Jun 27, 2018
                      System Information
                      • Framework (e.g. TensorFlow) / Algorithm (e.g. KMeans): Mxnet / BYOM
                      • Framework Version: 1.1
                      • Python Version: 3.6
                      • CPU or GPU: both
                      • Python SDK Version: 1.4.1
                      • Are you using a custom image: Yes - custom algorithm on mxnet estimator.
                      Describe the problem
                      My remote deployment log shows 4+ simultaneous executions of the same codes with 1 segmentation fault. The model gets served eventually. Should I be concerned?
                      The seg fault originates from mxnet and immediately after container_support.serving - importing user module. However, due to the mysterious parallel execution of things, I am not sure if the sequence of events are from the same process.
                      The only feasible explanation to me is that model serving keeps spamming docker instances until seg fault. However, I did not seem to find such descriptions in the documentations.
                      Minimal repro / logs
                      [2018-06-27 07:20:09 +0000] [103] [INFO] Booting worker with pid: 103
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
2018-06-27 07:20:09,981 INFO - container_support.serving - creating Server instance
2018-06-27 07:20:10,005 INFO - container_support.serving - importing user module
Segmentation fault: 11
Stack trace returned 10 entries:
[bt] (0) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2a9e78) [0x7f531f03be78]
[bt] (1) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2909e8e) [0x7f532169be8e]
[bt] (2) /lib/x86_64-linux-gnu/libc.so.6(+0x354b0) [0x7f53530414b0]
[bt] (3) /usr/bin/python() [0x513ef4]
[bt] (4) /usr/bin/python() [0x57d7e8]
[bt] (5) /usr/bin/python() [0x518248]
[bt] (6) /usr/bin/python() [0x464e67]
[bt] (7) /usr/bin/python(_PyObject_GC_NewVar+0xbe) [0x518d0e]
[bt] (8) /usr/bin/python(PyTuple_New+0xff) [0x58456f]
[bt] (9) /usr/bin/python() [0x52116b]
[2018-06-27 07:20:10 +0000] [110] [INFO] Booting worker with pid: 110
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
mxnet 1.1.0

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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                          Skip to content
                          Does model serving imply spamming docker instances until seg faults? #260
                          Closed
                          Closed
                          Does model serving imply spamming docker instances until seg faults?#260
                          Description
                          @yifeim
                          yifeim
                          opened on Jun 27, 2018
                          System Information
                          • Framework (e.g. TensorFlow) / Algorithm (e.g. KMeans): Mxnet / BYOM
                          • Framework Version: 1.1
                          • Python Version: 3.6
                          • CPU or GPU: both
                          • Python SDK Version: 1.4.1
                          • Are you using a custom image: Yes - custom algorithm on mxnet estimator.
                          Describe the problem
                          My remote deployment log shows 4+ simultaneous executions of the same codes with 1 segmentation fault. The model gets served eventually. Should I be concerned?
                          The seg fault originates from mxnet and immediately after container_support.serving - importing user module. However, due to the mysterious parallel execution of things, I am not sure if the sequence of events are from the same process.
                          The only feasible explanation to me is that model serving keeps spamming docker instances until seg fault. However, I did not seem to find such descriptions in the documentations.
                          Minimal repro / logs
                          [2018-06-27 07:20:09 +0000] [103] [INFO] Booting worker with pid: 103
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
2018-06-27 07:20:09,981 INFO - container_support.serving - creating Server instance
2018-06-27 07:20:10,005 INFO - container_support.serving - importing user module
Segmentation fault: 11
Stack trace returned 10 entries:
[bt] (0) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2a9e78) [0x7f531f03be78]
[bt] (1) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2909e8e) [0x7f532169be8e]
[bt] (2) /lib/x86_64-linux-gnu/libc.so.6(+0x354b0) [0x7f53530414b0]
[bt] (3) /usr/bin/python() [0x513ef4]
[bt] (4) /usr/bin/python() [0x57d7e8]
[bt] (5) /usr/bin/python() [0x518248]
[bt] (6) /usr/bin/python() [0x464e67]
[bt] (7) /usr/bin/python(_PyObject_GC_NewVar+0xbe) [0x518d0e]
[bt] (8) /usr/bin/python(PyTuple_New+0xff) [0x58456f]
[bt] (9) /usr/bin/python() [0x52116b]
[2018-06-27 07:20:10 +0000] [110] [INFO] Booting worker with pid: 110
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
mxnet 1.1.0

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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

                              Skip to content
                              Does model serving imply spamming docker instances until seg faults? #260
                              Closed
                              Closed
                              Does model serving imply spamming docker instances until seg faults?#260
                              Description
                              @yifeim
                              yifeim
                              opened on Jun 27, 2018
                              System Information
                              • Framework (e.g. TensorFlow) / Algorithm (e.g. KMeans): Mxnet / BYOM
                              • Framework Version: 1.1
                              • Python Version: 3.6
                              • CPU or GPU: both
                              • Python SDK Version: 1.4.1
                              • Are you using a custom image: Yes - custom algorithm on mxnet estimator.
                              Describe the problem
                              My remote deployment log shows 4+ simultaneous executions of the same codes with 1 segmentation fault. The model gets served eventually. Should I be concerned?
                              The seg fault originates from mxnet and immediately after container_support.serving - importing user module. However, due to the mysterious parallel execution of things, I am not sure if the sequence of events are from the same process.
                              The only feasible explanation to me is that model serving keeps spamming docker instances until seg fault. However, I did not seem to find such descriptions in the documentations.
                              Minimal repro / logs
                              [2018-06-27 07:20:09 +0000] [103] [INFO] Booting worker with pid: 103
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
2018-06-27 07:20:09,981 INFO - container_support.serving - creating Server instance
2018-06-27 07:20:10,005 INFO - container_support.serving - importing user module
Segmentation fault: 11
Stack trace returned 10 entries:
[bt] (0) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2a9e78) [0x7f531f03be78]
[bt] (1) /usr/local/lib/python3.5/dist-packages/mxnet/libmxnet.so(+0x2909e8e) [0x7f532169be8e]
[bt] (2) /lib/x86_64-linux-gnu/libc.so.6(+0x354b0) [0x7f53530414b0]
[bt] (3) /usr/bin/python() [0x513ef4]
[bt] (4) /usr/bin/python() [0x57d7e8]
[bt] (5) /usr/bin/python() [0x518248]
[bt] (6) /usr/bin/python() [0x464e67]
[bt] (7) /usr/bin/python(_PyObject_GC_NewVar+0xbe) [0x518d0e]
[bt] (8) /usr/bin/python(PyTuple_New+0xff) [0x58456f]
[bt] (9) /usr/bin/python() [0x52116b]
[2018-06-27 07:20:10 +0000] [110] [INFO] Booting worker with pid: 110
/usr/local/lib/python3.5/dist-packages/gunicorn/workers/ggevent.py:65: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. Please monkey-patch earlier. See https://github.com/gevent/gevent/issues/1016
monkey.patch_all(subprocess=True)
mxnet 1.1.0

                              Activity
                              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
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