Fix out-of-bounds write in classical AMG restrictResidual - #382
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stevenliuyi wants to merge 1 commit into
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stevenliuyi wants to merge 1 commit into
stevenliuyi wants to merge 1 commit into
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Fixes #381.
In multi-GPU classical AMG, the coarse residual vector
rrinrestrictResidual()is not always big enough: the productR * rwrites one entry per row ofR, andRcan have more rows than the halo offsets used to sizerr, so every V-cycle writes past the end ofrr. This change makesrrat least as long asRhas rows.Tested with the program from #381.