#define NCONNECTIONS 512 /* snow needs one per node */

[tobigithub]

Hi,
not a bug, but future improvement, increase number of connections to 256 or 512

define NCONNECTIONS 128 /* snow needs one per slave node */

So snow clusters can grow for the future.

See snow error SNOW and doSNOW - all connections are in use

It basically comes out of this, to figure out limitations and base benchmarks.
4/8/16/32/64/120 node doSNOW cluster

Due to the current NCONNECTIONS limitation and sometimes open connections the total number of 128 is only randomly obtained, 120 is usually safer, that would be a non-issue of the #define NCONNECTIONS 512 was set.

Is it a realistic improvement, I certainly think so:
See Windows Task Manger 512 CPUs

I am not absolutely sure if this is the solution to the above error.
Cheers
Tobias

[j-martens]

Perhaps Brian can investigate? @andrie