Change Serial Channels during a running job
For the general usage of FPGA Serial Channels visit the main documentation page.
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First submit a job like normal. You can either start with the first topology or omit it and start without any intial links set:
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fpga-tester@n2login1:~ $ srun -A pc2-mitarbeiter --constraint=emulxilinx_u280_xrt2.15 -N 1 -p fpga -t 2:00:00 --pty zsh |
or for the Bittware 520N partition also start with a specific initial topology:
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fpga-tester@n2login1:~
$ srun -A pc2-mitarbeiter --constraint=bittware_520n_20.4.0_max -N 1 -p fpga -t 2:00:00 --fpgalink=ringO --pty zsh |
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fpga-tester@n2fpga17:~ $ module load fpga/changeFPGAlinks |
Then you can run the commandchangeFPGAlinksXilinxfor the Alveo U280 partition or the commandchangeFPGAlinks. Again either for the Bittware 520N partition. The command names might be subject to changes / unification in the near future. You can run the command to specify a new topology, or run it without topology arguments to check the current status.
Examples for running the command without a topology (This will only generate a overview and not change anything, useful for documenting) or specify a topology (With the known --fpgalink= format) to set the links:
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fpga-tester@n2fpga03:~
$ changeFPGAlinksXilinx # Not changing anything, just checking
There are currently no links set up.
Your nodes in this Job (4743991):
n2fpga03
No configuration change requested. Goodbye.
fpga-tester@n2fpga17:~
$ changeFPGAlinks # Not changing anything, just checking
Your current link-setup:
n2fpga17:acl0:ch1-n2fpga17:acl1:ch0
n2fpga17:acl0:ch3-n2fpga17:acl1:ch2
n2fpga17:acl1:ch1-n2fpga17:acl0:ch0
n2fpga17:acl1:ch3-n2fpga17:acl0:ch2
To visualize this configuration click here:
https://pc2.github.io/fpgalink-gui/index.html?import=n2fpga17%3Aacl0%3Ach1-n2fpga17%3Aacl1%3Ach0%20n2fpga17%3Aacl0%3Ach3-n2fpga17%3Aacl1%3Ach2%20n2fpga17%3Aacl1%3Ach1-n2fpga17%3Aacl0%3Ach0%20n2fpga17%3Aacl1%3Ach3-n2fpga17%3Aacl0%3Ach2%20
Your nodes in this Job (901745):
n2fpga17
No configuration change requested. Goodbye. |
Visualize here: Click!
Now Examples for running the command to specify a topology with the --fpgalink= syntax is used to change set the topologylinks:
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fpga-tester@n2fpga17:~ $ changeFPGAlinks --fpgalink=n00:acl0:ch0-n00:acl0:ch1 --fpgalink=n00:acl1:ch2-n00:acl1:ch3 --fpgalink=n00:acl1:ch0-n00:acl1:ch1 --fpgalink=n00:acl0:ch2-n00:acl0:ch3 # Change to custom topology Your current link-setup: n2fpga17:acl0:ch1-n2fpga17:acl1:ch0 n2fpga17:acl0:ch3-n2fpga17:acl1:ch2 n2fpga17:acl1:ch1-n2fpga17:acl0:ch0 n2fpga17:acl1:ch3-n2fpga17:acl0:ch2 To visualize this configuration click here: https://pc2.github.io/fpgalink-gui/index.html?import=n2fpga17%3Aacl0%3Ach1-n2fpga17%3Aacl1%3Ach0%20n2fpga17%3Aacl0%3Ach3-n2fpga17%3Aacl1%3Ach2%20n2fpga17%3Aacl1%3Ach1-n2fpga17%3Aacl0%3Ach0%20n2fpga17%3Aacl1%3Ach3-n2fpga17%3Aacl0%3Ach2%20 Your nodes in this Job (901745): n2fpga17 Started changing link-config with ID 0defb6f3-244f-415d-8372-5eaa324b4aa0 START: Thu Sep 16 11:44:41 CEST 2021 INFO: Request from user "fpga-tester" from job "901745" INFO: Nodelist of job: n2fpga17 INFO: Setting SPANK_FPGALINK0=n00:acl0:ch0-n00:acl0:ch1 INFO: Setting SPANK_FPGALINK1=n00:acl1:ch2-n00:acl1:ch3 INFO: Setting SPANK_FPGALINK2=n00:acl1:ch0-n00:acl1:ch1 INFO: Setting SPANK_FPGALINK3=n00:acl0:ch2-n00:acl0:ch3 Host list n2fpga17 Generated connections fpgalink n2fpga17:acl0:ch0-n2fpga17:acl0:ch1 fpgalink n2fpga17:acl1:ch2-n2fpga17:acl1:ch3 fpgalink n2fpga17:acl1:ch0-n2fpga17:acl1:ch1 fpgalink n2fpga17:acl0:ch2-n2fpga17:acl0:ch3 Topology configuration request accepted after 0.205315113068s To visualize this configuration click here: https://pc2.github.io/fpgalink-gui/index.html?import=n2fpga17%3Aacl0%3Ach0-n2fpga17%3Aacl0%3Ach1%20n2fpga17%3Aacl1%3Ach2-n2fpga17%3Aacl1%3Ach3%20n2fpga17%3Aacl1%3Ach0-n2fpga17%3Aacl1%3Ach1%20n2fpga17%3Aacl0%3Ach2-n2fpga17%3Aacl0%3Ach3%20 |
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