Download e-book for iPad: High Performance Computing for Dummies by Douglas Eadline

By Douglas Eadline

ISBN-10: 047049008X

ISBN-13: 9780470490082

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Extra resources for High Performance Computing for Dummies

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Don’t use single core benchmarks as a basis for processor or network comparisons. If you’re going to run in a multi-core environment then why not test in a multicore environment? Single core benchmark numbers are basically meaningless if you want to run in a multi-core world. Quite often, users are disappointed with “real world” performance after they purchase the hardware because they used inappropriate benchmarks in their specifications. This difference becomes very apparent when one considers the memory bandwidth of x86 processors.

Many clusters also employ commercial schedulers that allocate resources on the cluster (or groups of clusters) for an organization. Finally, though software may be open and freely distributed there are a certain number of companies that provide commercial support for cluster software. Overall, the combined open and closed aspects of the HPC software ecosystem seem to work rather well. Chapter 6 Ten (Okay, Six) HPC Takeaways In This Chapter ▶ Understanding HPC’s advantages ▶ Developing a plan C oncluding this very brief introduction to the world of HPC computing is rather difficult.

Second, it provides a safeguard against unplanned obsolescence. In the past, it was not uncommon for a large computer system to lose software support because a vendor went out of business, the system had been phased out, or the budget may have run out. With open source, users have a choice to continue using these systems and take over the support themselves. Finally, open 44 High Performance Computing For Dummies source allows a high level of optimization. Software installations can be minimized so that only essential HPC software is present.

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High Performance Computing for Dummies by Douglas Eadline

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