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Philip Lykke Carlsen edited this page Oct 11, 2012
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- 11-10-2012, 10:00-12:00 Debugging cuda. Martin knows sufficiently cuda voodoo to make kernels print. Discovered that all threads read optionData[tid] rather than optionData[blockDim.x]!.
- 11-10-2012, 13:00-13:59 "printf" in Cuda has a re-ordering, call excluding, life on its own. Caught an off-by-one indexing error (not completely sure why it was there).
- 11-10-2012, 14:00-... Last (apparent) error in cuda implementation found! It seems that the binomial reducer must have "cache-Δ" devisible by "n", otherwise it seems to compute "too much". We celebrate by having a 5 minute fresh air break with victory Tic-Tacs. And we decide that the calendar now has 256 days in it.