SIMD meeting notes for two meetings in Q1'25 (#1952)

Author: ppenzin

simd/2025/SIMD-02-14.md

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+![WebAssembly logo](/images/WebAssembly.png)
+
+## Agenda for the February 14 video call of WebAssembly's SIMD Subgroup
+
+- **Dates**: 2025-02-14
+- **Times**:
+    - 3pm-4pm UTC (8am-9am PDT)
+- **Location**: *link on calendar invite*
+- **Contact**:
+    - Name: Petr Penzin
+    - Email: penzin.dev@gmail.com
+
+
+### Registration
+
+Fill out [sign-up form](https://forms.gle/bscWhsD9U4hZEsUV9) to attend.
+
+### Logistics
+
+This meeting will be a Google Meet video conference.
+
+## Agenda items
+
+1. Announcement: Petr out on parental leave potentially impacting May meeting
+1. Open: FP16 support in hardware (Yury)
+1. Wasm 3.0 spec Relaxed SIMD issue/help
+1. Recent LLVM patches that affect Wasm SIMD tuning or lowering
+1. Proposal to add minnumber/maxnumer (min/max favoring numbers over NaNs)
+
+## Meeting notes
+
+Attendees:
+
+- Andrew Brown
+- Petr Penzin
+- Yury Delendik
+
+Notes:
+
+1. Announcement: Petr out on parental leave potentially impacting May meeting
+1. Open: FP16 support in hardware (Yury)
+   1. Telemetry: AVX512 or AVX10 will have flag? ARM8.2+?
+1. Wasm 3.0 spec Relaxed SIMD issue/help
+   1. https://github.com/WebAssembly/relaxed-simd/pull/144 - this needs a bit more visibility, some suggestions for fixing were already made
+1. Recent LLVM patches that affect Wasm SIMD tuning or lowering
+   1. https://github.com/llvm/llvm-project/pull/123325 (still open)
+   1. https://github.com/llvm/llvm-project/pull/125696 (still open) - allow vectorizing interleave access
+   1. https://github.com/llvm/llvm-project/pull/122896 - calculates memory op and cast op costs
+   1. https://github.com/llvm/llvm-project/pull/123207 - autovectorizer support for dot
+1. Proposal to add minnumber/maxnumer (min/max favoring numbers over NaNs)
+   1. https://github.com/WebAssembly/design/issues/1548
+

simd/2025/SIMD-03-14.md

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+![WebAssembly logo](/images/WebAssembly.png)
+
+## Agenda for the March 14 video call of WebAssembly's SIMD Subgroup
+
+- **Dates**: 2025-03-14
+- **Times**:
+    - 3pm-4pm UTC (8am-9am PDT)
+- **Location**: *link on calendar invite*
+- **Contact**:
+    - Name: Petr Penzin
+    - Email: penzin.dev@gmail.com
+
+
+### Registration
+
+Fill out [sign-up form](https://forms.gle/bscWhsD9U4hZEsUV9) to attend.
+
+### Logistics
+
+This meeting will be a Google Meet video conference.
+
+## Agenda items
+
+1. Relaxed trunc [corner cases](https://github.com/WebAssembly/relaxed-simd/issues/160)
+1. Relaxed-simd support in ONNX runtime
+1. Opens/announcements
+
+## Meeting notes
+
+Attendees:
+
+- Andrew Brown
+- Anton Kirilov
+- Brendan Dahl
+- Michael McLoughlin
+- Petr Penzin
+- Yury Delendik
+
+Notes:
+
+1. Relaxed trunc corner cases
+   1. Trying to wrap up final outstanding item for relaxed-simd
+   1. Trying to not avoid excessive corner cases in the core spec and test suite - underspecify there and test in embedding test suites as needed, for example WPT
+   1. Add “hardware specific behavior” to the spec
+1. Relaxed-simd support in ONNX runtime
+   1. CI is passing, looks like it is getting close to getting merged, specific changes to kernel still need a review
+1. Opens/announcements
+   1. Andrew is trying to reproduce fp16 performance numbers with varying success
+1. Michael McLoughlin has presented hardware-specialized wasm experience report, will try to go over details next meeting
+