Last day at IBM
Today is my last day at IBM. It’s been great 11+ years, but it’s time to move on to new challenges. I’ll have more news in a couple weeks. For
Category: IBM
IBM stories: posts about my work at the Big Blue.
Go 1.13 — Performance updates for POWER
Better later than never — Go 1.13 updates. Here are my performance highlights for POWER architecture: Implementation of math/bits RotateLeft{32|64} as intrinsics in SSA reduces execution time by up
We’re hiring!
We are hiring in Brazil! We are hiring worldwide Update (2019-08-31): all positions are filled. Thanks to everyone who applied! Update (2019-05-23): positions for core libraries are filled. We still have
Go 1.12 — Performance updates for POWER
Now that the source tree is closed, here are some IBM POWER architecture related updates I did that you can expect in go 1.12: Atomics: implemented a new memory model
Go 1.11 — Performance updates for POWER
I have been working on several fronts lately to add new features and improve performance for Go on IBM POWER architecture in go 1.11. In preparation for the source tree
Go 1.10 updates for POWER
The Go 1.10 source is frozen now and I have some updates on Power architecture support. In addition to the updates I’ve already given here regarding performance and POWER9 support,
Go updates for POWER9 / ISA 3.0
I recently pushed two patches upstream related to the enablement of the OpenPOWER ISA 3.0 (POWER9) instructions. The first one, commit 526f342, enables instructions in the assembler. This includes new
Go 1.9 released
Go 1.9 is released and has some new features, including: Type aliases New math/bits package for bit manipulation in unsigned integers New Map type in the sync package For the
Go performance updates for Power
I rewrote most of the math/big arithmetic implementations so they perform better on Power. Commit 9459c03, which I already mentioned here before, added new implementations for addVV/subVV with up to ~3x
Advance Toolchain for Linux on Power 10.0-4 released
A new update for the Advance Toolchain for Linux on Power 10.0 is released. Advance Toolchain for Linux on Power 10.0-4 new features GCC provides: Fix for incorrect code generation for __divkf3.
Go: Changed function alignment to 16 bytes for Power
I just added a simple, but important change for Power. In order to eliminate inefficiencies in the iBuffer, all functions are now aligned to 16 bytes. This opens a new
Go: Performance optimization for addVV for Power
I added a new implementation for addVV (math/big package) for Power architecture. The new assembly implementation leverages specific Power instructions and provides a speedup of ~3x over the generic implementation in Go.