derek.holloway
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26 lines
1.2 KiB
Markdown
26 lines
1.2 KiB
Markdown
# Changelog for release 0.1.7
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### Resolved issues
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- Fixed fp64 operations reporting incorrect cycles in gfx11/11.5
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- Fixed ds_bvh_ instructions in gfx12
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- Fixed s_ttracedata and s_wakeup not properly parsing in MI3xx
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### Changes
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- s_barrier in gfx11/11.5 is now MSG type and also reports wait time as stalled time, instead of idle.
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- Similar to previous gfx9 versions, this can be misleading in MSG bus utilization and tools shall aware of it.
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- s_barrier in gfx9 (MI2xx, MI3xx) now reports two tokens:
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- MSG when entered
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- IMMED when exiting
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- This means tools need to be aware they'll get double the hitcount in gfx9 s_barriers
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- The previous behavior could be misleading on messagebus utilization
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- s_endpgm now only reports stall and execute time for the message part.
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- Previously, s_endpgm would display a large MSG use.
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### Known issues
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- The wave completion part of s_endpgm time is now 'idle' time. This is incoherent with s_waitcnt and s_barrier which considers it a wait (stall).
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- In gfx10 and gfx11, the latency of s_barrier is ambiguous when there are some types of surrounding IMMEDs.
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- Consider adding s_nop 0 around barriers when accurate timing is required.
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