Adding Compute Express Link CXL3.0 based on PCIe6 and CXL4.0 based on PCIe7 to the IBM Z and IBM LinuxONE

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Hi,

Kindly, review the attached PDF File which includes the Use Cases that you asked about.

Please Note, my ideas are concentrated on the Heterogeneous computing including IBM Power , IBM Z, IBM LinuxONE, Intel IPU, Intel Servers, Intel FPGA , Nvidia DGX, Nvidia DPU, Nvidia GPU, AMD Servers, Xilinx FPGA and other future Systems from other companies.

I will be very pleased to answer your questions.

Thanks, with kindest regards,

Abdullah A. Jassim

University of Baghdad

Hi,

Kindly, review the attached PDF File which includes the Use Cases that you asked about.

Please Note, my ideas are concentrated on the Heterogeneous computing including IBM Power , IBM Z, IBM LinuxONE, Intel IPU, Intel Servers, Intel FPGA , Nvidia DGX, Nvidia DPU, Nvidia GPU, AMD Servers, Xilinx FPGA and other future Systems from other companies.

I will be very pleased to answer your questions.

Thanks, with kindest regards,

Abdullah A. Jassim

University of Baghdad

Kindly, The below Article from the below document::

Red Hat OpenShift Container Platform on IBM Z and IBM LinuxONE

As in the following Hyperlink

https://public.dhe.ibm.com/software/dw/linux390/docu/RHOCP-reference-architecture.pdf

4.2 Networking

In an RHOCP environment, planning of the network is very important given the fact that with IBM Z and IBM LinuxONE you have different choices and combinations for the RHOCP network. Each RHOCP node can have one or more network interfaces. The network design is dependent on the isolation requirements and integration architecture with other workloads Depending on the implementation and hypervisor, you can use the following network options:

• HiperSockets networks, which are internal IBM Z and LinuxONE networks. They do not require any network cards. You can define multiple instances in one machine.

• OSA (Open System Adapter) cards that can be shared and at the same time can be bounded for enhancing the network bandwidth and build an HA network.

• RoCE cards which are like the OSA cards, being able to be shared as well and run different protocols.

• Depending on the hypervisor you can use virtual switches in combination with the network capabilities of IBM Z and LinuxONE mentioned above.

Now, Let us present the suggestions in details, as follows:

About the above first 3 paragraphs ( HiperSockets networks, OSA (Open System Adapter and RoCE Cards), Please read the following article:

Regarding the Need more information about the Idea :

https://ibm-z-hardware-and-operating-systems.ideas.ibm.com/ideas/ZL1S-I-415

The Case is:

• HiperSockets networks, which are internal IBM Z and LinuxONE networks. They do not require any network cards. You can define multiple instances in one machine.

• OSA (Open System Adapter) cards that can be shared and at the same time can be bounded for enhancing the network bandwidth and build an HA network.

• RoCE cards which are like the OSA cards, being able to be shared as well and run different protocols.

Our Suggestion is :

Adding CXL 3.0 and later CXL 4.0 interconnectivity ( CXL 3 and CXL 4 Ports uses physical Buses PCIe 6 or PCIe7 and CXL Protocols), to the items in the above list, or use CXL over Ethernet instead of the RDMA over Converges Ethernet RoCE.

Kindly, The below Article from the below document::

Red Hat OpenShift Container Platform on IBM Z and IBM LinuxONE

As in the following Hyperlink

https://public.dhe.ibm.com/software/dw/linux390/docu/RHOCP-reference-architecture.pdf

4.2 Networking

In an RHOCP environment, planning of the network is very important given the fact that with IBM Z and IBM LinuxONE you have different choices and combinations for the RHOCP network. Each RHOCP node can have one or more network interfaces. The network design is dependent on the isolation requirements and integration architecture with other workloads Depending on the implementation and hypervisor, you can use the following network options:

• HiperSockets networks, which are internal IBM Z and LinuxONE networks. They do not require any network cards. You can define multiple instances in one machine.

• OSA (Open System Adapter) cards that can be shared and at the same time can be bounded for enhancing the network bandwidth and build an HA network.

• RoCE cards which are like the OSA cards, being able to be shared as well and run different protocols.

• Depending on the hypervisor you can use virtual switches in combination with the network capabilities of IBM Z and LinuxONE mentioned above.

Now, Let us present the suggestions in details, as follows:

About the above first 3 paragraphs ( HiperSockets networks, OSA (Open System Adapter and RoCE Cards), Please read the following article:

Regarding the Need more information about the Idea :

https://ibm-z-hardware-and-operating-systems.ideas.ibm.com/ideas/ZL1S-I-415

The Case is:

• HiperSockets networks, which are internal IBM Z and LinuxONE networks. They do not require any network cards. You can define multiple instances in one machine.

• OSA (Open System Adapter) cards that can be shared and at the same time can be bounded for enhancing the network bandwidth and build an HA network.

• RoCE cards which are like the OSA cards, being able to be shared as well and run different protocols.

Our Suggestion is :

Adding CXL 3.0 and later CXL 4.0 interconnectivity ( CXL 3 and CXL 4 Ports uses physical Buses PCIe 6 or PCIe7 and CXL Protocols), to the items in the above list, or use CXL over Ethernet instead of the RDMA over Converges Ethernet RoCE.

Thank you for submitting this RFE. We require more information to evaluate this submission. Can you please share more details behind the need and use cases?