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Benchmark results never gets reported #202

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FFY00 opened this issue Sep 18, 2020 · 3 comments
Closed

Benchmark results never gets reported #202

FFY00 opened this issue Sep 18, 2020 · 3 comments
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software Component: software

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@FFY00
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FFY00 commented Sep 18, 2020 

$ glasgow run benchmark source
I: g.device.hardware: device already has bitstream ID e00c76bf7d43e9c1b138500bf7df1a1f
I: g.cli: running handler for applet 'benchmark'
I: g.applet.internal.benchmark: running benchmark mode source for 8.000 MiB

I've traced the issue to iface.read never continuing and bisected the breaking patch to a7d041f.
@FFY00
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FFY00 commented Sep 18, 2020 •
edited

Looks like that commit can be cleanly reverted, and after that everything does work as supposed to.

$ glasgow run benchmark source
I: g.device.hardware: device already has bitstream ID e00c76bf7d43e9c1b138500bf7df1a1f
I: g.cli: running handler for applet 'benchmark'
I: g.applet.internal.benchmark: running benchmark mode source for 8.000 MiB
I: g.applet.internal.benchmark: mode source: 25.11 MiB/s (200.85 Mb/s)

@FFY00
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FFY00 commented Sep 18, 2020

The following patch solves the issue.

diff --git a/software/glasgow/support/task_queue.py b/software/glasgow/support/task_queue.py
index 25cda9f..cb87c0c 100644
--- a/software/glasgow/support/task_queue.py
+++ b/software/glasgow/support/task_queue.py
@@ -21,7 +21,8 @@ class TaskQueue:

     def _callback(self, future):
         self._live.remove(future)
-        self._done.append(future)
+        if not future.cancelled():
+            self._done.append(future)

     def submit(self, coro):
         """

I miss the background behind this change, @whitequark could you clarify?

@whitequark
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The background for the change is described in the commit message. Whether your patch is correct or not, I can't say offhand because asyncio cancellation semantics is annoyingly tricky.

@whitequark whitequark added benchmark Applet: benchmark software Component: software and removed benchmark Applet: benchmark labels Sep 29, 2020
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