Response #1: 20050815 General1. Is dense linear algebra a performance bottleneck in your applications? 2. How often do your applications use the arithmetic precisions listed below:
3. What dense matrix sizes are most important or timeconsuming for your application? 4. Does your application come close to, or run out of memory on important problems? 5. Number of processors used for your application:
6. Which architectures do you use or intend to use in the next three years? 7. Do you use any other sequential or parallel dense linear algebra packages other than LAPACK or ScaLAPACK? 8. Please rank how the following features would be useful to your current or planned applications?
9. Do your applications solve linear algebra problems of the type? LAPACK Usage1. Do you use LAPACK (or a vendor version of LAPACK )? 4. If you use LAPACK, do you use a vendors version or one obtained directly from Netlib? 5. If you have used both a vendors version of LAPACK and Netlibs, how do the two versions compare? 6. Do your applications make direct LAPACK calls? 7. Do your applications use libraries which depend on LAPACK? 8. Do your applications use a higherlevel interface to LAPACK? 10. Is the LAPACK procedure interface a barrier to more extensive use? 11. From which languages do you call LAPACK routines? 13. How could the LAPACK interface be improved to feel more natural to your application and implementation language? 15. How frequently do you refer to the LAPACK Users Guide? ScaLAPACK Usage1. Do you use ScaLAPACK (or a vendor version of ScaLAPACK )? 4. If you use ScaLAPACK, do you use a vendors version or one obtained directly from Netlib? 6. Do your applications make direct ScaLAPACK calls? 7. Do your applications use libraries which depend on ScaLAPACK? 8. Do your applications use a higherlevel interface to ScaLAPACK? 10. Is the ScaLAPACK procedure interface a barrier to more extensive use? 11. From which languages do you call ScaLAPACK routines? 12. Please describe any tools or helper functions that you frequently implement to assist your applications in using ScaLAPACK? 13. How could the ScaLAPACK interface be improved to feel more natural to your application and implementation language? 15. How frequently do you refer to the ScaLAPACK Users Guide? Targeted Environment Specifics1. Under which operating system environments do your applications run? 3. If your applications run in a distributedmemory environment, which styles of parallelism do they employ? Additional Information
