Comments (5)
We won't be adding support to a crypto library for something we cannot ensure the quality of on an ongoing basis. @edelsohn, would you mind emailing me on [email protected] about this request? We need access to a reasonable number of Z cores (not the tiny free plan) in order to do end-to-end package builds.
When I enquired last year, I was emailed by [email protected] on 2nd Dec 2020 who said:
We have a number of options to access s390x systems for academic, research, and open source community projects. Let me pull a few of our technical resources together to better understand your project and requirements so we can look at various options. I will get back to you to schedule a call once I have identified the colleagues to include.
And then she stopped responding altogether despite multiple emails from me.
I don't have the capacity to chase up anyone through the IBM organisation. If you have someone else who could get us access to a stable, and reasonable number of cores to do bulk package builds, then we can support Z. By comparison, we have ~1000 cores in our x86 build pool, and ~400 in our arm64 pool (WorksOnArm/equinix-metal-arm64-cluster#279), and ~160 in our ppc64le pool. These would be available for all OCaml package builds, not just mirage-crypto.
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Are the numbers of "cores" referring to hardware threads or to processor cores? I suspect that they refer to hardware threads as shown by Linux /proc/cpuinfo. There is a big difference.
Also, s390x systems have different performance characteristics from other systems, so forecasting resource requirements based on x86 systems is not accurate. Starting a conversation with "we want 100's or 1000's of s390x cores" is not productive.
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I'm happy to work with the OCaml community to provide long-term access to Linux on s390x systems. I sent you private email.
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Update: I've got a VM now and am getting the base image builder hooked up. A manual run has succeeded with OCaml 4.12 images, so it should be straightforward.
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thanks for your issue, and your pull request that I just merged. I opened a new issue, #131 with further s390x improvements.
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Related Issues (20)
- Improve support on Linux and X (s390x) HOT 1
- A way to get the global `g` state from the initialization of the RNG device. HOT 3
- test failures on arm32 HOT 1
- Question: Exposing the tag in AES-GCM HOT 3
- Config flags are not correct when used in cross-architecture-compilation with Dune 3 HOT 5
- Split sub libraries in `mirage-crypto-rng` into individual packages HOT 3
- RNG initialization inconsistencies HOT 1
- cleanup CI scripts HOT 1
- mirage-crypto-rng-eio questions HOT 6
- Mirage_crypto.Chacha20.authenticate_encrypt seg-faults on empty message HOT 3
- Failure to build in a unikernel with target hvt HOT 3
- Support for secp256k1 HOT 1
- Ed25519 / X25519 potential performance improvements (by looking at BoringSSL)
- [dkml] Virtual library for mirage-crypto-pk
- Make mirage-crypto-ec (test) independent of mirage-crypto-pk HOT 2
- [dkml] mirage-crypto-ec issues
- Roadmap for 1.0 release HOT 9
- ARM64 cycle count HOT 3
- data races in mirage-crypto HOT 9
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