dvsipc_config_type
Forces DVS to load in a mode optimized for DVS clients (0) or servers (1). This
parameter can be used to make DVS load in a non-default manner. Frequently
used for repurposed compute nodes.
●
Default value: 0 for compute nodes, 1 for service nodes
●
To view read-only:
cat
/sys/module/dvsipc/parameters/dvsipc_config_type
●
To change prior to boot, add these lines to
<nid_of_choice>
/etc/modprobe.d/dvs-local.conf
(comment out
either the client or server line, depending on the type of node(s) being
configured):
# Load DVS as a client
options dvsipc dvsipc_config_type=0
# Load DVS as a server
options dvsipc dvsipc_config_type=1
●
To change dynamically:
hostname#
echo 0 > /proc/fs/dvs/ipc/config-type
hostname#
echo 1 > /proc/fs/dvs/ipc/config-type
dvsipc_single_msg_queue Used to disable fairness of service, which is enabled by default. Setting this
parameter to 1 disables fairness of service by forcing DVS to use a single
message queue instead of a list of queues.
●
Default value: 0 (fairness of service enabled)
●
To view read-only:
cat
/sys/module/dvsipc/parameters/dvsipc_single_msg_queue
●
To change prior to boot, use the single_msg_queue field of the
dvs_instance_info parameter. If no other fields in dvs_instance_info need to be
changed, it may be easier to change the dvsipc_single_msg_queue parameter
directly by adding these lines to
<nid_of_choice>
/etc/modprobe.d/dvs-local.conf
:
# Disable fairness of service
options dvsipc dvsipc_single_msg_queue=1
# Enable fairness of service
#options dvsipc dvsipc_single_msg_queue=0
●
To change dynamically: N/A
dvsof_concurrent_reads
Controls how many threads are allowed into the read path on the server. A value
of -1 disables, 0 uses the number of cores on the CPU, and any other positive
number sets the number of threads. Set to 0 for best DataWarp performance.
●
Default value: -1
●
To view read-only:
cat
/sys/module/dvs/parameters/dvsof_concurrent_reads
Cray DVS
S3016
166
