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Caveats about Linux clustering...

...or when is better to buy an Alpha.

We will have a lot of work in the case of MPI for some aplications, because it lack of full implementation of the standard. The solution, unfortunately, is to by a propietary implementation MPI that implements all the protocol (there is one).

Anyway, we would do better buying a huge Alpha SMP or an O2000 than a Linux cluster if:

• We have the money.

• We have a serial -non parallel- aplication.

• None of the parallel aplications equivalent to our serial aplication is good for us. (strange, but it can happend).

• The time of parallelizing and executing our aplication will be greater than importation of an Alpha and execution.