Nikhil created MADLIB-1337:
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Summary: DL: Better warning when no of gpus < no of segments
Key: MADLIB-1337
URL: https://issues.apache.org/jira/browse/MADLIB-1337
Project: Apache MADlib
Issue Type: Improvement
Components: Deep Learning
Reporter: Nikhil
Fix For: v1.16
We support the use case when no of gpus < no of segments however we noticed
that sometimes this causes gpdb failures like
{code}
could not connect to segment: initialization of segworker group failed
{code}
We should give a meaningful warning to the user to make them aware that this
feature may or may not work and also make a recommendation
Possible recommendations
1. Use as many gpus as segments (this may not be practical)
2. May be a smaller buffer size will help. Use minibatch preprocessor dl to
pack less images. (we need to test this before we recommend it)
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