poor performance of DTSBV (via DPBTRS) on Zen 5 #26

Activity

1. kvaragan commented on Jan 13, 2025

   

   kvaragan

   on Jan 13, 2025 via email

   Collaborator

   More actions

   [AMD Official Use Only - AMD Internal Distribution Only] Hi, We have not yet optimized these routines; we will add it to our to-do list. What's your case ? Thanks Get Outlook for iOS<https://aka.ms/o0ukef>

   …

   ________________________________ From: hiokazaki ***@***.***> Sent: Sunday, January 12, 2025 6:40:25 AM To: amd/blis ***@***.***> Cc: Subscribed ***@***.***> Subject: [amd/blis] poor performance of DTSBV (via DPBTRS) on Zen 5 (Issue #26) Caution: This message originated from an External Source. Use proper caution when opening attachments, clicking links, or responding. Hello, I noticed low performance of DPBTRS, profiling shows that a very large fraction of CPU time is spent in DTBSV. Using Intel MKL improves the situation so low memory bandwidth of desktop Zen 5 is probably not the root cause here. Can you assist in enhancing performance of DTBSV on Zen 5? — Reply to this email directly, view it on GitHub<#26>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ADAJQWAKAWWLX4HFYEZ6QTT2KG6IDAVCNFSM6AAAAABVAPPG6WVHI2DSMVQWIX3LMV43ASLTON2WKOZSG44DEMRRHAYTEMI>. You are receiving this because you are subscribed to this thread.
2. hiokazaki commented on Jan 14, 2025

   

   hiokazaki

   on Jan 14, 2025 via email

   Author

   More actions

   Hi, We are using Nektar++ IncompressibleNavierStokes CFD code. If you need exact DPBTRS call parameters let me know when you are ready and I can send you a trace, or a test case if you want to reproducec with the original Nektar++ code.

   …

   On Mon, Jan 13, 2025 at 01:03:34AM -0800, Kiran wrote: [AMD Official Use Only - AMD Internal Distribution Only] Hi, We have not yet optimized these routines; we will add it to our to-do list. What's your case ? Thanks Get Outlook for iOS<https://aka.ms/o0ukef> ________________________________ From: hiokazaki ***@***.***> Sent: Sunday, January 12, 2025 6:40:25 AM To: amd/blis ***@***.***> Cc: Subscribed ***@***.***> Subject: [amd/blis] poor performance of DTSBV (via DPBTRS) on Zen 5 (Issue #26) Caution: This message originated from an External Source. Use proper caution when opening attachments, clicking links, or responding. Hello, I noticed low performance of DPBTRS, profiling shows that a very large fraction of CPU time is spent in DTBSV. Using Intel MKL improves the situation so low memory bandwidth of desktop Zen 5 is probably not the root cause here. Can you assist in enhancing performance of DTBSV on Zen 5? — Reply to this email directly, view it on GitHub<#26>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ADAJQWAKAWWLX4HFYEZ6QTT2KG6IDAVCNFSM6AAAAABVAPPG6WVHI2DSMVQWIX3LMV43ASLTON2WKOZSG44DEMRRHAYTEMI>. You are receiving this because you are subscribed to this thread. -- Reply to this email directly or view it on GitHub: #26 (comment) You are receiving this because you authored the thread. Message ID: ***@***.***>
3. kvaragan commented on Jan 15, 2025

   

   kvaragan

   on Jan 15, 2025

   Collaborator

   More actions

   Hi,
   Can you send mail about performance issue you are facing with Nektar++ to: toolchainsupport@amd.com
4. hiokazaki commented on Jan 16, 2025

   

   hiokazaki

   on Jan 16, 2025 via email

   Author

   More actions

   sure

   …

   On Tue, Jan 14, 2025 at 08:59:40PM -0800, Kiran wrote: Hi, Can you send mail about performance issue you are facing with Nektar++ to: ***@***.*** -- Reply to this email directly or view it on GitHub: #26 (comment) You are receiving this because you authored the thread. Message ID: ***@***.***>