Comments (4)
+1
I really don't like this probing at import which silently creates contexts all over the place. I've had numerous issues in the past with it. The only advantage is that the "best" device is automatically picked (though "best" can be incorrect in certain cases).
Perhaps this probing could be made optional with an environment variable, eg. SILX_OPENCL="auto"
.
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I would be in favor of a Python API rather than an env. var. to control this.
I'd keep the automatic selection as the default behavior (since it is a good default and it would otherwise break the compatibility).
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I am on it ... several path have been envisaged to mitigate this effect:
- do not instanciate the
OpenCL
in the module (lasy loading) - make the
OpenCL
class a borg (easy) - lasy test the devices only when any of the
atomic
feature is actually needed (not difficult).
Only the first one is really tricky...
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BTW, there is silx.config which is used to custom some behaviors (mostly for plots), but it may be used here. Best to stick to built-in types there though.
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