[Valgrind-users] Floating point benchmark needed

[Julian S. <js...@ac...>]

One of the Valgrind developers (Nick) has recently started 
putting together a collection of programs intended to measure
Valgrind's performance (in perf/ if you have a recent svn checkout).

This is a good thing.  For the first time it allows us to
systematically measure Valgrind's performance across a range
of different program types and different CPUs.  Even at this
early stage it has uncovered some performance problems, the
fixes for which will be in 3.2.0.

We are looking for a good floating point test program for the
suite.  There are already two FP programs in it, but neither meets
the following set of requirements.  If you know of a program
which does meet them, and especially if you have the time/expertise
to help modify an existing program to meet them, we would be pleased
to hear from you.

Essential requirements:

- must be available under an open-source license.  Doesn't have
  to be GPL since is not being linked into Valgrind.

- must be written in C, and work correctly on both 32- and 64-bit
  platforms, big- and little-endian

- must be predominantly double-precision floating-point in workload

- must have several innermost loops/hotspots.  A program of at
  least moderate complexity is desired (1000-10000 lines of C).
  Our existing FP benchmarks are synthetic benchmarks and do not
  meet this requirement.

Perhaps something like a simple raytracer, fluid dynamics code,
or audio codec would be suitable.

J