On 2014-07-07T19:35:37 EEST, Kilian Cavalotti wrote:
Hi,
On Mon, Jul 7, 2014 at 6:01 AM, Michal Mazurek <[email protected]> wrote:
Every time I log in using:
srun -p xxx -w yyy --pty bash -i
I get a ridiculously small terminal:
I can confirm that behavior. It seems to happen as soon as the initial
terminal is larger than 256 columns.
If cols <= 256, the terminal size is kept:
$ tput cols
179
$ srun --pty bash
node:~$ env | grep PTY_WIN
SLURM_PTY_WIN_ROW=51
SLURM_PTY_WIN_COL=179
node:~$ tput cols
179
If cols > 256, it's overflowed somehow:
$ tput cols
264
$ srun --pty bash
node:~$ env | grep PTY_WIN
SLURM_PTY_WIN_ROW=51
SLURM_PTY_WIN_COL=8
node:~$ tput cols
8
The resulting column size seems to be the original column size modulo 256.
From src/common/env.h (struct env_options):
uint8_t ws_col; /* window size, columns */
uint8_t ws_row; /* window size, row count */
which explains the modulo 256 (2**8). Looking at my system headers,
struct winsize has members of type "unsigned short", which on a common
x86(-64) system corresponds to uint16_t. So a fix ought to be simple,
although I'm not sure whether there are any issues with the network
protocol if the types above are enlarged.
--
Janne Blomqvist, D.Sc. (Tech.), Scientific Computing Specialist
Aalto University School of Science, PHYS & BECS
+358503841576 || [email protected]
