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Re: How to fasten formatted printf? [message #92525 is a reply to message #92524]

Mon, 04 January 2016 18:53

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

On Monday, January 4, 2016 at 9:01:10 PM UTC-5, Yunfeng Tian wrote:
> Hi all,
>
> I usually have over a thousand text files to write. Each file contains 9 columns and several thousand lines. The below is a test.
...
> For 1000 files, it will take over 2 minutes. I wonder whether there is a way to do it very quickly.

You are probably limited by I/O. You can investigate:
1. SSD or hybrid SSD drive
2. Some kind of "RAM disk"
3. Whether you can satisfy your requirements by writing unformatted binary files with WRITEU instead of formatted binary files with PRINTF.
3. Computer with better CPU and I/O throughput performance.
Other than using binary files, there's really nothing you can do to your IDL code to make it faster.

Craig

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[Message index]

		How to fasten formatted printf? By: enod on Mon, 04 January 2016 18:01
		Re: How to fasten formatted printf? By: Craig Markwardt on Mon, 04 January 2016 18:53
		Re: How to fasten formatted printf? By: Jeremy Bailin on Tue, 05 January 2016 08:34
		Re: How to fasten formatted printf? By: markb77 on Tue, 05 January 2016 09:57

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