Jul 29, 2024 · Long scoreboard stalls are caused by global memory operations. The solution is to increase data locality and L2 cache hit rates, or move the data to shared memory.

Oct 24, 2025 · I would expect that long scoreboard stalls occur only at the first FADD, since the subsequent three loads should be L1 cache hits and therefore fast. Surprisingly, the stalls remain …

Feb 13, 2024 · The “summation” actually involves some math, so the most common stall reason used to be the math-pipeline (until I did some optimizations, which lead to the long-scoreboard).

Aug 8, 2024 · Long Scoreboard indicates that the SMs could not be fed data fast enough from memory. Fetching instructions on time is so critical that the GPU provides a number of stations where …

Oct 13, 2022 · The SMs are counting the Long Scoreboard Stalls on each cycle where they are waiting for their data read to come back from memory. They don’t have direct visibility into what is taking so …

Mar 24, 2023 · The warp state statistics further indicates “stall long scoreboard” (80+ cycles per instruction). I then switched to the source page and sorted the “stall_long_sb” in the navigation. For …

Dec 21, 2023 · I have 3 quesions: How does LDGDEPBAR work? I am using LDGSTS.E.BYPASS, I don’t use LDG. Can I remove LDGDEPBAR instruction? How does WARPSYNC (on L3796) work? …

Oct 2, 2025 · For the first instruction in the sass code, we see two output scoreboard dependencies. This is confusing to us because this instruction involves only a single register.

Apr 14, 2023 · Hi everyone, I’m using cuda to implement a solver for the thermodynamics part of a CFD program. Going to profile the program I get high stall values due to long/short scoreboard and I …

Nov 30, 2023 · I’m analyzing my program in Nsight Compute and my warps are experiencing stalls due to MIO Throttle and Long Scoreboard. In the context of an optix program could MIO Throttle be …