Re: HPL low performance result.

Hi Martin,
Interesting results, I'm especially glad to see  the results for PEA using MPITB - that's a real world problem, and seeing a good speedup there using MPITB and GNU Octave is something that I believe will interest people.

Why 64 bits is faster than 32 bits? I don't worry about that, I just use 64 bit Linux for all my work. I'm sure that an explanation is somewhere out there on the Internet. With modern CPUs, almost everyone should be using the 64 bit version. I don't understand why the 32 bit version gets downloaded more than the 64 bit version - either people don't realize that they can use the 64 bit version, or there are a lot of people clustering old computers (which is a waste of money, except for possible educational benefits).

Are you going to publish this work somewhere? I'm sure that the developer of MPITB would like to know about your results.