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Serving cached AOT methods at the JITServer and loading them at the client #14017

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merged 10 commits into from
Nov 27, 2021
Merged

Serving cached AOT methods at the JITServer and loading them at the client #14017

merged 10 commits into from
Nov 27, 2021

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AlexeyKhrabrov
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This PR completes the minimal implementation of caching compiled code at JITServer. It adds the code to serve serialized methods from the JITServer AOT cache and load them at the client.

@AlexeyKhrabrov
Disable JITServer AOT cache at the client if not using AOT compilation
c3f3f1e 
In order to store AOT methods at the server and load them at the client,
we need a functional local SCC and the AOT compiler. If either the SCC
or the AOT compiler is not used, disable the JITServer AOT cache option.

Signed-off-by: Alexey Khrabrov <khrabrov@cs.toronto.edu>
@AlexeyKhrabrov AlexeyKhrabrov mentioned this pull request Nov 25, 2021
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@mpirvu This PR is ready for review.

@mpirvu mpirvu self-assigned this Nov 25, 2021
@mpirvu mpirvu added the comp:jitserver Artifacts related to JIT-as-a-Service project label Nov 25, 2021
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Added AOT cache statistics.

@AlexeyKhrabrov AlexeyKhrabrov force-pushed the jitserver_aotcache_load branch 2 times, most recently from 48f90a7 to b25ef0f Compare November 25, 2021 23:15
mpirvu
mpirvu reviewed Nov 26, 2021
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LGTM. Please see the inline comments/questions.

runtime/compiler/control/J9Options.cpp Outdated Show resolved Hide resolved
runtime/compiler/control/JITClientCompilationThread.cpp Show resolved Hide resolved
runtime/compiler/control/JITServerCompilationThread.cpp Show resolved Hide resolved
runtime/compiler/control/rossa.cpp Show resolved Hide resolved
runtime/compiler/net/MessageTypes.hpp Outdated Show resolved Hide resolved
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mpirvu commented Nov 26, 2021

jenkins compile all jdk8

@AlexeyKhrabrov
Enable JITServer ROMClass sharing by default if using AOT cache
4b8f269 
Since ROMClass sharing is beneficial in the same scenarios as the
AOT cache (multiple client JVMs), it should be enabled by default.

Signed-off-by: Alexey Khrabrov <khrabrov@cs.toronto.edu>
@AlexeyKhrabrov
JITServer AOT cache load implementation
7aea401 
This commit adds the code to serve serialized methods from the JITServer
AOT cache in response to AOT compilation requests and load these methods
at the client after deserializing them and storing in the local SCC.

If the AOT deserialization or load fails, the next attempt to compile
the method will bypass the JITServer AOT cache.

AOT serialization record IDs newly added to the client's cache during
deserialization are sent to the server with subsequent compilation
requests and are saved in the client session at the server.

Signed-off-by: Alexey Khrabrov <khrabrov@cs.toronto.edu>
@AlexeyKhrabrov
Do not relocate deserialized AOT methods with SVM immediately
c16f9ea 
Signed-off-by: Alexey Khrabrov <khrabrov@cs.toronto.edu>
@AlexeyKhrabrov
Reset AOT deserializer after connecting to new JITServer instance
cfbaa26 
Signed-off-by: Alexey Khrabrov <khrabrov@cs.toronto.edu>
@AlexeyKhrabrov
Update JITServer protocol version
a973f29 
Signed-off-by: Alexey Khrabrov <khrabrov@cs.toronto.edu>
@AlexeyKhrabrov
Collect AOT cache statistics at the JITServer
bc1ae54 
Signed-off-by: Alexey Khrabrov <khrabrov@cs.toronto.edu>
@AlexeyKhrabrov
Collect AOT cache statistics at the JIT client
9f072ac 
Signed-off-by: Alexey Khrabrov <khrabrov@cs.toronto.edu>
@AlexeyKhrabrov
Print AOT cache statistics at JIT dump and shutdown at server and client
6f83248 
The printing of statistics can be enabled by setting the
environment variable TR_PrintJITServerAOTCacheStats.

Signed-off-by: Alexey Khrabrov <khrabrov@cs.toronto.edu>
@AlexeyKhrabrov
Account for AOT cache hits in JITServer message statistics
003497a 
Signed-off-by: Alexey Khrabrov <khrabrov@cs.toronto.edu>
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I've addressed the comments.

The 32-bit Windows build in the tests https://openj9-jenkins.osuosl.org/job/PullRequest-OpenJ9/1255/ is failing with an error unrelated to this PR: https://openj9-jenkins.osuosl.org/job/Build_JDK8_x86-32_windows_Personal/132/

21:36:51  F:\Users\jenkins\workspace\Build_JDK8_x86-32_windows_Personal\openj9\runtime\compiler\runtime\SignalHandler.c(401) : error C2220: warning treated as error - no 'object' file generated
21:36:51  F:\Users\jenkins\workspace\Build_JDK8_x86-32_windows_Personal\openj9\runtime\compiler\runtime\SignalHandler.c(401) : warning C4133: 'function' : incompatible types - from 'J9JavaVM *' to 'J9VMThread *'
21:36:51  make[4]: *** [runtime/compiler/CMakeFiles/j9jit.dir/build.make:4086: runtime/compiler/CMakeFiles/j9jit.dir/runtime/SignalHandler.c.obj] Error 2

The aix build seems to be stuck.

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mpirvu commented Nov 26, 2021

jenkins test sanity xlinuxjit zlinuxjit jdk11

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mpirvu commented Nov 26, 2021

jenkins test sanity xlinuxjit,zlinuxjit jdk11

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I reverted the problematic PR causing the win32 build failure last night.

@pshipton pshipton mentioned this pull request Nov 26, 2021
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mpirvu commented Nov 26, 2021

https://openj9-jenkins.osuosl.org/job/PullRequest-OpenJ9/1257/
Tests on zlinux passed.
Tests on xlinux failed due to infra as far as I can tell:

[Pipeline] nodesByLabel
05:20:23  Found a total of 20 nodes with the 'ci.role.test&&hw.arch.x86&&sw.os.linux' label
[Pipeline] echo
05:20:23  machine limit is 20
[Pipeline] timeout
05:20:23  Timeout set to expire in 1 hr 0 min
[Pipeline] {
[Pipeline] copyArtifacts
[Pipeline] }
[Pipeline] // timeout
[Pipeline] echo
05:20:54  Cannot get cached TRSS JSON data. Skipping copyArtifacts...
[Pipeline] timeout
05:20:54  Timeout set to expire in 2 hr 0 min
[Pipeline] {
[Pipeline] copyArtifacts
[Pipeline] }
[Pipeline] // timeout
[Pipeline] echo
07:06:02  Cannot run copyArtifacts from test.getDependency. Skipping copyArtifacts...
[Pipeline] sh
07:06:02  cent7-x64-5 was marked offline: Timed out for last 5 attempts
[Pipeline] }
[Pipeline] // timestamps
[Pipeline] }
[Pipeline] // stage
[Pipeline] echo
terminateJavaProcesses iteration: 1
[Pipeline] echo
PROCESSCATCH: Checking for any leftover java processes on the machine
[Pipeline] sh
cent7-x64-5 was marked offline: Timed out for last 5 attempts
[Pipeline] }
[Pipeline] // timeout
[Pipeline] echo
Exception: java.io.IOException: Unable to create live FilePath for cent7-x64-5
[Pipeline] }
[Pipeline] // node
[Pipeline] }
[Pipeline] // stage
[Pipeline] End of Pipeline
Finished: FAILURE

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mpirvu commented Nov 26, 2021

jenkins test sanity xlinuxjit jdk11

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mpirvu commented Nov 27, 2021

Even though the the test on xlinux appears as aborted; https://openj9-jenkins.osuosl.org/job/PullRequest-OpenJ9/1259/
all the tests were successful:
https://openj9-jenkins.osuosl.org/job/Test_openjdk11_j9_sanity.functional_x86-64_linux_jit_Personal_testList_0/47/tapResults/
https://openj9-jenkins.osuosl.org/job/Test_openjdk11_j9_sanity.functional_x86-64_linux_jit_Personal_testList_1/48/tapResults/

@mpirvu mpirvu merged commit ea06f74 into eclipse-openj9:master Nov 27, 2021
@AlexeyKhrabrov AlexeyKhrabrov deleted the jitserver_aotcache_load branch November 27, 2021 14:37
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