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https://issues.apache.org/jira/browse/FLINK-8431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16331637#comment-16331637
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ASF GitHub Bot commented on FLINK-8431:
---------------------------------------
Github user eastcirclek commented on a diff in the pull request:
https://github.com/apache/flink/pull/5307#discussion_r162524332
--- Diff:
flink-mesos/src/main/java/org/apache/flink/mesos/runtime/clusterframework/MesosTaskManagerParameters.java
---
@@ -238,6 +254,16 @@ public static MesosTaskManagerParameters
create(Configuration flinkConfig) {
cpus = Math.max(containeredParameters.numSlots(), 1.0);
}
+ double gpus = flinkConfig.getDouble(MESOS_RM_TASKS_GPUS, 0.0);
+ if (gpus < 0) {
+ throw new
IllegalConfigurationException(MESOS_RM_TASKS_GPUS.key() +
+ " cannot be negative");
+ }
+ if (gpus % 1 != 0) {
--- End diff --
I tested that `(1.000000000000001 % 1) != 0` is true while
`(1.0000000000000001 % 1) != 0` is false.
> Allow to specify # GPUs for TaskManager in Mesos
> ------------------------------------------------
>
> Key: FLINK-8431
> URL: https://issues.apache.org/jira/browse/FLINK-8431
> Project: Flink
> Issue Type: Improvement
> Components: Cluster Management, Mesos
> Reporter: Dongwon Kim
> Assignee: Dongwon Kim
> Priority: Minor
>
> Mesos provides first-class support for Nvidia GPUs [1], but Flink does not
> exploit it when scheduling TaskManagers. If Mesos agents are configured to
> isolate GPUs as shown in [2], TaskManagers that do not specify to use GPUs
> cannot see GPUs at all.
> We, therefore, need to introduce a new configuration property named
> "mesos.resourcemanager.tasks.gpus" to allow users to specify # of GPUs for
> each TaskManager process in Mesos.
> [1] http://mesos.apache.org/documentation/latest/gpu-support/
> [2] http://mesos.apache.org/documentation/latest/gpu-support/#agent-flags
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