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potaman

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02-17-2012
04:04 PM

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Unclassifiable error on second call to dss_reorder

This happens irrespective of whether the matrix is the same or not. the second call to dss_reorder fails. Any ideas?

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I tried changing to 10.3.3.174 and got that a Memory Overwrite in lda-m gap error. any idea what this means?

potaman

Beginner

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02-17-2012
04:45 PM

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*"The structure of the matrix changes and hence the solver has to be deleted and reconstructed at every iteration" - what do you mean by "the solver has to be deleted"? Please show thow order of invoking dss routines and be much better if you give us the test case.**--Gennady*

Gennady_F_Intel

Moderator

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02-17-2012
08:50 PM

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Step 1 .

potaman

Beginner

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02-20-2012
11:39 AM

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At each time step do,

error = dss_create(handle,MKL_DSS_DEFAULTS)

error = dss_define_structure(handle,MKL_DSS_NON_SYMMETRIC,ia,n,n,ja,nnz)

dss_reorder(handle,MKL_DSS_AUTO_ORDER,perm)

!! then for a number of iterations I do.

error = dss_solve_real(handle,MKL_DSS_DEFAULTS,b,1,x)

!! After the code has converged

error = dss_delete(handle,MKL_DSS_DEFAULTS)

At the first time step this works fine. at the second time step . I am able to create the solver and define its structure. but when the call is made to dss_reorder, I get

Memory overwrite in lda-m gap: loc( -65536, 21322608) = 0.0000000 , Invalid message level

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Konstantin_A_Intel

Employee

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02-26-2012
08:22 PM

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Hi,

Where do you call dss_factor?

Regards,

Konstantin

For more complete information about compiler optimizations, see our Optimization Notice.