elbencho
ParallelReductionsBenchmark
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| elbencho | ParallelReductionsBenchmark | |
|---|---|---|
| 2 | 2 | |
| 146 | 59 | |
| - | - | |
| 7.5 | 4.6 | |
| 22 days ago | 5 months ago | |
| C++ | C++ | |
| GNU General Public License v3.0 only | - |
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elbencho
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Tracking mentions began in Dec 2020.
ParallelReductionsBenchmark
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Failing to Reach 204 GB/S DDR4 Bandwidth
For the single threaded version, they have a data hazard on the sums that could be smoothed out with a little loop unrolling and separate variables.
But in the [threaded version](https://github.com/unum-cloud/ParallelReductions/blob/fd16d9...) they have separate slots for an accumulator but it's still in a shared vector, which most likely has the issue I described.
Here is the source and the threads: https://github.com/unum-cloud/ParallelReductions/blob/fd16d9...
OFC we don't expect the compiler to instantiate them for us, it's not OpenMP :)
What are some alternatives?
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