Where is the log file?

[Matt]

When using the training tool of Caffe, is there a log file written to disk - if so, where is it?

[Yangqing Jia]

Welcome to Caffe users!

Good question - glog actually writes it to

/tmp/<program name>.<hostname>.<user name>.log.<severity
level>.<date>.<time>.<pid>

See the following page for details:

https://google-glog.googlecode.com/svn/trunk/doc/glog.html

Yangqing

On Sat, Aug 9, 2014 at 7:22 PM, Matt <matt...@gmail.com> wrote:
> When using the training tool of Caffe, is there a log file written to disk -
> if so, where is it?
>

> --
> You received this message because you are subscribed to the Google Groups
> "Caffe Users" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to caffe-users...@googlegroups.com.
> To post to this group, send email to caffe...@googlegroups.com.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/caffe-users/3ed4fcac-4eca-470b-8fe8-c758fe8715bd%40googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.

[Matt]

Thank you Yangqing, I indeed found it at that location.

--Matt

[Sergio Guadarrama]

You can also redirect the output to a  log file using "2> filename.log"

[Houqiqi Houqiqi]

Hi, where should I add "2> filename.log"? I cann't find such param in the solver.prototxt, So would you tell me more details? Thanks 

[escorciav]

"2> filename.log" is a redirection command. It's NOT a proto or caffe parameter. You should append it when you call caffe binary on your shell.

Check the following links for more info:

0. http://linuxcommand.org/lts0060.php

1. http://stackoverflow.com/questions/876239/bash-redirect-and-append-both-stdout-and-stderr

[Zhao.Kai]

Hi, but how to specify the log DIR when using the python interface ?

[Lillian Liu]

Hello, did find out how to specify the log directory when using pycaffe?

[Christos Apostolopoulos]

Lillian check this website out : https://aaronsplace.co.uk/blog/2015-12-22-caffe-log-plotting.html

[Jan]

For the record, if anyone is still wondering how to do this: in python (and as such also in pycaffe) you can redirect stdout simply by setting sys.stdout to a different file. Code snippet:

import sys
import caffe

# let's say we'd like to redirect caffe's output to the file caffe-output.txt:
tmp = sys.stdout
sys.stdout = open('caffe-output.txt', 'wt')

# now everything sent to stdout will go to the file instead. Even 'print' commands.
net = caffe.Net('foo.prototxt', 'bar.caffemodel', caffe.TEST)
net.forward()
print 'Even this is written to the file!'

# reset the redirection
sys.stdout.close()
sys.stdout = tmp

# now everything's back to normal, a print will be written to the console again
print 'This is written to the real stdout again!'

In theory you can set stdout to everything resembling a file stream, and do even more elaborate redirections.

Another hint, unrelated to python: If you want to print the output of caffe to stdout (usually the console) as well as to a file, use the 'tee' command:

$ caffe train -solver whatever.prototxt | tee output.txt

Jan

[Lillian Liu]

Thank you very much Jan and Christos! I will try it out asap!

Lillian

[sou...@gmail.com]

also $caffe train --solver .... --log_dir="..." works

[Yinzhou Jiancheng]

Hello Jan. I have tried your solution. But it seems not working. 

The "print" output can be found in the file. But no caffe print output.

Do you know how to solve this ? Thanks.

Yinzhou

在 2016年5月9日星期一 UTC+8下午4:42:49，Jan写道：