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- we were not 16-byte aligning cuDoubleComplex variables. error showed up "much later" in cuGetVector (error 11) and cudaDeviceSynchronize (error 4). Did binary search to find source of error. How do we program error-checks so that run-time errors show up "immediately"? cuda_safe_call?
- if we have 1 number used by many threads should it go into shared memory? constant memory? we would think constant memory would be the right answer. shared memory would give a bank conflict.
- cuda-gdb generates output for kernel launches. slows down the code dramatically? becomes unusable.
- understand crash with rpa-gpu-expt running rpa_only_Na_cuda.py with nvprof
- how does cuda deal with memory fragmentation?
- why does nvvp require more runs than nvprof for the same data?
3/5/2013
- 2 slides for Samuli
- run profiling on RPA (lin)
- memory leak (perhaps related to crashes)
- adding error check functions
- base.py get_phi_agp kernel
- rpa (jun)
- manuscript
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