Cedar: Difference between revisions

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Cedar (view source)

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CEDAR is a heterogeneous cluster, suitable for a variety of workloads, located at Simon Fraser University. It is named for the [https://en.wikipedia.org/wiki/Thuja_plicata Western Red Cedar], B.C.’s official tree and of great spiritual significance to the region's First Nations people. It was previously known as "GP2" and is still identified as such in the [https://www.computecanada.ca/research-portal/accessing-resources/resource-allocation-competitions/ 2017 RAC] documentation.  
CEDAR is a heterogeneous cluster, suitable for a variety of workloads, located at Simon Fraser University. It is named for the [https://en.wikipedia.org/wiki/Thuja_plicata Western Red Cedar], B.C.’s official tree, which is of great spiritual significance to the region's First Nations people. It was previously known as "GP2" and is still identified as such in the [https://www.computecanada.ca/research-portal/accessing-resources/resource-allocation-competitions/ 2017 RAC] documentation.  


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The Cedar system is sold and supported by Scalar Decisions, Inc. The node manufacturer is Dell, the high performance temporary space is from DDN, and the interconnect is from Intel. It is entirely liquid cooled, using rear-door heat exchangers.   
Cedar is sold and supported by Scalar Decisions, Inc. The node manufacturer is Dell, the high performance temporary space is from DDN, and the interconnect is from Intel. It is entirely liquid cooled, using rear-door heat exchangers.   


====Attached Storage System==== <!--T:4-->
====Attached Storage==== <!--T:4-->


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* Not allocated.
* Not allocated.
* Inactive data will be purged.
* Inactive data will be purged.
* [http://www.ddn.com/ DDN] storage system with approximately 4PB usable capacity.
* [http://www.ddn.com/ DDN] storage with approximately 4PB usable capacity.
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|'''Project space'''<br />External persistent storage
|'''Project space'''<br />External persistent storage
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The design of Cedar is to support multiple simultaneous parallel jobs of up to 1024 cores in a fully non-blocking manner. For larger jobs the interconnect has a 2:1 blocking factor, i.e., even for jobs running on several thousand cores the Cedar system provides a high-performance interconnect.
The design of Cedar is to support multiple simultaneous parallel jobs of up to 1024 cores in a fully non-blocking manner. For larger jobs the interconnect has a 2:1 blocking factor, i.e., even for jobs running on several thousand cores, Cedar provides a high-performance interconnect.


====Node types and characteristics:==== <!--T:6-->
====Node types and characteristics==== <!--T:6-->


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Cedar will have a total of 27,696 CPU cores for computation, and 584 GPU devices. Total theoretical peak double precision performance is 936 teraflops for CPUs, plus 2,744 for GPUs, yielding over 3.6 petaflops of theoretical peak double precision performance. 22 fully connected "islands" of 32 base or large nodes will each have 1024 cores in a fully non-blocking topology, with each island expected to yield over 30 teraflops of measured double precision performance (measured with high performance LINPACK). There is a 2:1 blocking factor between the 1024 core islands.
Cedar has a total of 27,696 CPU cores for computation, and 584 GPU devices. Total theoretical peak double precision performance is 936 teraflops for CPUs, plus 2,744 for GPUs, yielding over 3.6 petaflops of theoretical peak double precision performance. 22 fully connected "islands" of 32 base or large nodes each have 1024 cores in a fully non-blocking topology, with each island expected to yield over 30 teraflops of measured double precision performance (measured with high performance LINPACK). There is a 2:1 blocking factor between the 1024 core islands.


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| "GPU large" nodes.  || 32 nodes || 256 GB of memory, 12 cores/socket, 2 sockets/node, 4 NVIDIA P100 Pascal GPUs/node (16GB HBM2 memory), All GPUs on the same PCI root.  E5-2650 v4
| "GPU large" nodes.  || 32 nodes || 256 GB of memory, 12 cores/socket, 2 sockets/node, 4 NVIDIA P100 Pascal GPUs/node (16GB HBM2 memory), All GPUs on the same PCI root.  E5-2650 v4
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| "Bigmem3000" nodes || 4 nodes || 3 TB of memory, 8 cores/socket, 4 sockets/node. Intel "Broadwell" CPUs at 2.1Ghz, model E7-4809 v4.
| "Bigmem3000" nodes || 4 nodes || 3 TB of memory, 8 cores/socket, 4 sockets/node. Intel "Broadwell" CPUs at 2.1Ghz, model E7-4809 v4.
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All of the above nodes will have local (on-node) temporary storage. GPU nodes will have a single 800GB SSD drive. All other compute nodes will have dual 480GB SSD drives, for a total raw capacity of 960GB.
All of the above nodes will have local (on-node) temporary storage. GPU nodes will have a single 800GB SSD drive. All other compute nodes will have dual 480GB SSD drives, for a total raw capacity of 960GB.


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Temporary storage is a Lustre filesystem based on DDN model ES14K technology. It includes 640 8TB NL-SAS disk drives, and dual redundant metadata controllers with SSD-based storage.   
Temporary storage is a Lustre filesystem based on DDN model ES14K technology. It includes 640 8TB NL-SAS disk drives, and dual redundant metadata controllers with SSD-based storage.   


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