Hi, Mian, Your observation is correct. FastBit does spend more time on IO than CPU, therefore, it is more important to figure out how to do IO faster..
John On 3/21/2010 5:33 AM, Mian Lu wrote: > Hi John: > > I wonder the performance bottleneck of bitmap type query is usually > dominated by I/O or CPU processing time? I see some paper said it was > bounded by CPUs. However, from FastBit, it looks like the CPU processing > is usually faster than I/O on my machine. I am thinking about using > multi-core or GPUs to accelerate the query processing. I am not sure > whether it is worthwhile. Thanks. > > Regards, > Mian > _______________________________________________ > FastBit-users mailing list > [email protected] > https://hpcrdm.lbl.gov/cgi-bin/mailman/listinfo/fastbit-users _______________________________________________ FastBit-users mailing list [email protected] https://hpcrdm.lbl.gov/cgi-bin/mailman/listinfo/fastbit-users
