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8
votes
2answers
112 views
How do Volkov and Demmel experimentally determine the latencies, line sizes, and page sizes of a GPU?
In "LU, QR and Cholesky Factorizations using Vector Capabilities of GPUs", by Vasily Volkov and James Demmel, there is an interesting way to interpret the latencies, line sizes, and page sizes of a ...
3
votes
3answers
247 views
CPU benchmarks for numerical kernels
CPU benchmarks available online mostly focus on desktop apps/games and rarely on serial/parallel numerical kernels, specially sparse ones (e.g., MatMult). Some benchmarks like NAS/SciMark exists but ...
4
votes
2answers
146 views
Effects of memory speed/architecture on Pardiso scaling
I am using a program that utilizes the PARDISO solver as part of the Intel math kernel library. I am currently in the process of deciding on a new computer to run the simulations on. I have a ...
29
votes
4answers
3k views
How much better are Fortran compilers really?
This question is an extension of two discussions that came up recently in the replies to "C++ vs Fortran for HPC". And it is a bit more of a challenge than a question...
One of the most often-heard ...
2
votes
1answer
212 views
Benchmarking performance in CFD: how to compare machines and codes?
Informally in our lab, we have developed 2 metrics to compare CFD solvers over
the range of machines we have access to. One is called COMP, which stands
for COde Machine Performance. This single ...
