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Hi,
Looks like the computation fails on 8-byte aligned data. As a workaround, please make sure x_in/x_out are 16-byte aligned.
Thanks
Dima
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Hi,
Looks like the computation fails on 8-byte aligned data. As a workaround, please make sure x_in/x_out are 16-byte aligned.
Thanks
Dima
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Hi Paul,
May it be the reason of the occasional crashes you see that the descriptor is freed once in the end instead of in the loop. Thank you for submitting the issue. Unfortunately the problem lives in MKL 10.2 too.
Thanks
Dima
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In case you use C# interfaces to MKL DFTI, the problems will likelyoccur if you use DftiSetValue function for setting forward/backward scales. The problem is associated with improper call of the variable argument function from the C# wrapper. The wrappers will be updated in the future, but there is a workaround, let me know if youneed it.
Thanks
Dima
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Hi Paul,
May it be the reason of the occasional crashes you see that the descriptor is freed once in the end instead of in the loop. Thank you for submitting the issue. Unfortunately the problem lives in MKL 10.2 too.
Thanks
Dima
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In case you use C# interfaces to MKL DFTI, the problems will likelyoccur if you use DftiSetValue function for setting forward/backward scales. The problem is associated with improper call of the variable argument function from the C# wrapper. The wrappers will be updated in the future, but there is a workaround, let me know if youneed it.
Thanks
Dima
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Hi Paul,
You found out that FFT crashes for 1024-point c2c out-of-place double precision but it looks like you should have analogous problems for other powers of 2 in case of problems with alignment. Please confirm that.
Thanks in advance
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You found out that FFT crashes for 1024-point c2c out-of-place double precision but it looks like you should have analogous problems for other powers of 2 in case of problems with alignment. Please confirm that.
Thanks in advance
-- Victor
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Hi Paul,
Could you please send us small C# test-case to reproduce your problem? If you have crashing problem with 256 and 512 sizes then it means thatmore likely your originalproblem is not related to 8-byte alignments of data.
Thanks in advance for your time
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Hi Paul,
Could you please send us small C# test-case to reproduce your problem? If ..... [deleted text]
Thanks in advance for your time
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As to 1024 and other powers of 2 (double precision) the problem with 8-byte aligned data is fixed.
But you wrote:
Yes, I do have this crashing problem for other power of 2 lengths - I have verified the crash for out-of-place c->c FFT lengths of 512 & 256.
Therefore,we need your C# test-case in order to reproduce crash problem for 256 and 512 because it's not related to alignment of data.
Thanks
--Victor
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As to 1024 and other powers of 2 (double precision) the problem with 8-byte aligned data is fixed.
[...]
Thanks
--Victor
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Hi Paul,
The fixes are in MKL 10.2.3 which will be available soon
--Victor
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Intel MKL 10.2 Update 3 is now available.
The problem discussed into this tread has been fixed into this update.
Please see the Intel MKL 10.2 Update 3 is now available announce. You can find there the link to the Intel registration center to download.Could you please let us know if the problem is still exists?
--Gennady
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