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Hello!
I want to extract the D matrix information in the LDLT decomposition in pardiso, using this method in order to use the strum sequence. I found the pardiso_sym_getdiag.c program in the example, mistakenly thought it was used to extract D matrix information, and compared it with MATLAB after using it. The results of this program are different, and even the information of negative numbers in the D matrix is different. If I want to extract the D matrix, what method should I use?
thanks for your help!
KAI
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Hi,
Thanks for posting on Intel Communities.
>>If I want to extract the D matrix, what method should I use?
pardiso_getdiag method returns the diagonal elements of initial and factorized matrix.
In order to use this routine, make sure to set iparm[55] to 1 before the main pardiso
Please find the below link for more details regarding the usage of pardiso_getdiag.
Best Regards,
Shanmukh.SS
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Hi,
Reminder:
Has the solution provided helped? Is your issue resolved?
Kindly let us know if we could close this thread at our end.
Best Regards,
Shanmukh.SS
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Hi,
We assume that your issue is resolved, If you need any additional information, please post a new question as this thread will no longer be monitored by Intel.
Best Regards,
Shanmukh.SS

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