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SpdResetAtomicCounter issues many 0-valued uncached writes to the same address #10

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jeremyong opened this issue Sep 17, 2023 · 0 comments
Open

SpdResetAtomicCounter issues many 0-valued uncached writes to the same address #10

jeremyong opened this issue Sep 17, 2023 · 0 comments

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@jeremyong
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This is more of a question than an issue since functionally, all the samples will operate correctly, but I noticed that the invocation to SpdResetAtomicCounter will issue an uncached write on all threads for the last remaining thread group. Is this intentional by any chance? Perhaps because the driver somehow realizes that the value being written is uniform and thus can be coalesced? Or would it have been better to restrict the invocation of SpdResetAtomicCounter to the thread with localInvocationIndex == 0?
@jeremyong jeremyong changed the title SpdResetAtomicCounter issues many 0 writes to the same address SpdResetAtomicCounter issues many 0-valued uncached writes to the same address Sep 17, 2023
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@jeremyong