LAM/MPI General User's Mailing List Archives

From: Jun-Wei Huang (jhuang_at_[hidden])
Date: 2009-02-21 15:22:05

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• Reply: Tim Prince: "Re: LAM: multiple processes operate on a single file simultaneously?"

Hi,
I am new to LAM/MPI. Could anyone help me to understand why
multi-process reading/writing the same file takes more time than one
process? Is that due to hard driver IO cannot be operated
simultaneously? Thank you.

I am using Red Hat Linux release 9 (Shrike), Lam-7.0 and simple file IO
commands (e.g., fopen, fread, fwrite).

Sincerely,

Junwei

• Next message: Tim Prince: "Re: LAM: multiple processes operate on a single file simultaneously?"
• Previous message: Tim Prince: "Re: LAM: Order causal, total, fifo in group communication mpi"
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• Reply: Tim Prince: "Re: LAM: multiple processes operate on a single file simultaneously?"