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log_common
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9:00-11:00
Discussion on how to proceed
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10:00-14:30
Individual activities. (See individual logs)
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14:30-16:30
Pair debugging: Eliminated rounding errors in CUDA pricer and reduced memory consumption considerably.
Individual activities. (See individual logs)
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09:30-09:59
Revising schedule and searching for literature.
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10:00-11:59
Individual activities. (See individual logs)
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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]!.
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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).
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14:00-14:40
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.
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15:00-15:59
Trimming Nvidia sdk-sample cruft from Cuda example. Currently undecided about the calendar issue in Cuda. Maintaining wiki. (Checking that every implementation executes on napoleon || checking survey literature) ("||" is the CSP parallel process operator) Setting up plc computer to use diku proxy for literature search.
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16:00-16:30
Literature search. Done for today.