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Issue 725738 link

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Issue metadata

Status: WontFix
Owner: ----
Closed: Jun 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Mac
Pri: 2
Type: Bug

Blocking:
issue 736176



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webgl2 conformance flakes on mac_optional_gpu_tests_rel (Intel)

Project Member Reported by sunn...@chromium.org, May 24 2017

Issue description

First set of failing builds:
https://luci-milo.appspot.com/buildbot/tryserver.chromium.mac/mac_optional_gpu_tests_rel/10559
https://luci-milo.appspot.com/buildbot/tryserver.chromium.mac/mac_optional_gpu_tests_rel/10540

Same tests in both cases:
* gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_conformance2_textures_misc_tex_unpack_params
* gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_fbomultisample_2_samples
* gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_texturefiltering_2d_array_combinations_01
* gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_texturespecification_basic_copyteximage2d
* gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_transformfeedback_interpolation_flat
* gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_transformfeedback_position

Swarming links:
https://chromium-swarm.appspot.com/task?id=3650a459b2a24810&refresh=10&show_raw=1
https://chromium-swarm.appspot.com/task?id=364e7f3d776df110&refresh=10&show_raw=1

Similarly another set of failing builds:
https://luci-milo.appspot.com/buildbot/tryserver.chromium.mac/mac_optional_gpu_tests_rel/10555
Swarming: https://chromium-swarm.appspot.com/task?id=3650385a26292510&refresh=10&show_raw=1

* gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_conformance2_textures_image_data_tex_2d_rgba8ui_rgba_integer_unsigned_byte
* gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_texturefiltering_3d_combinations_07
* gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_texturespecification_teximage3d_pbo_params
* gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_transformfeedback_array_separate_points
* gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_transformfeedback_interpolation_smooth

https://luci-milo.appspot.com/buildbot/tryserver.chromium.mac/mac_optional_gpu_tests_rel/10552
Swarming: https://chromium-swarm.appspot.com/task?id=3650177627466410&refresh=10&show_raw=1

* gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_conformance2_textures_image_data_tex_2d_rgb8ui_rgb_integer_unsigned_byte
* gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_transformfeedback_array_separate_triangles
* gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_transformfeedback_interpolation_centroid
* gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_transformfeedback_random_separate_lines

See how the first failing test is the same and there are other common failures.

kbr@ who's the right owner for this? Should we disable these tests?
 
Owner: kbr@chromium.org
Status: Assigned (was: Untriaged)
kbr@ Assign back to me if we want these disabled for I am the pixel wrangler.

Comment 2 by kbr@chromium.org, May 24 2017

Labels: pixeler
Owner: sunn...@chromium.org
These two:
https://luci-milo.appspot.com/buildbot/tryserver.chromium.mac/mac_optional_gpu_tests_rel/10559
https://luci-milo.appspot.com/buildbot/tryserver.chromium.mac/mac_optional_gpu_tests_rel/10540

were caused by the Raritan IP KVM connection to the bot failing. This can be identified by looking at the logs:

https://chromium-swarm.appspot.com/task?id=364e7f3d776df110&refresh=10&show_raw=1
https://chromium-swarm.appspot.com/task?id=3650a459b2a24810&refresh=10&show_raw=1

and noting that Telemetry failed to find the Intel GPU:

(INFO) 2017-05-23 07:20:14,833 browser._LogBrowserInfo:130  GPU device 0: VENDOR = 0x0, DEVICE = 0x0

This was subsequently fixed. I was going to file a bug about it, but the Labs team must have already noticed an increased failure rate on this bot because recent jobs detect the GPU properly.

https://chromium-swarm.appspot.com/bot?id=build569-m4&sort_stats=total%3Adesc

Could you please dig deeper into the other failures and see what the root cause appears to be? Thanks.

Comment 3 by kbr@chromium.org, May 24 2017

Labels: -pixeler Hotlist-PixelWrangler
Cc: khushals...@chromium.org
Owner: ----
Status: Available (was: Assigned)
cc current pixel wrangler

Comment 5 by kbr@chromium.org, Jun 23 2017

Blocking: 736176

Comment 6 by kbr@chromium.org, Jun 23 2017

Status: WontFix (was: Available)
I looked through the current jobs on this tryserver:
https://luci-milo.appspot.com/buildbot/tryserver.chromium.mac/mac_optional_gpu_tests_rel/?limit=200

and they basically look good. No evidence of significant flakiness, but I didn't go through all the builds. The flaky KVM connection that caused a couple of the failures before was fixed.

Noticed one odd failure which I filed as Issue 736176. Going to close this as WontFix (not reproducible).

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