RE: RFR: 8207851 JEP Draft: Support ByteBuffer mapped over non-volatile memory

2018-11-09 Thread White, Derek
Thanks Andrew, looks great! - Derek > -Original Message- > From: Andrew Dinn > Sent: Thursday, November 08, 2018 11:01 AM > To: White, Derek ; Vladimir Kozlov > ; Alan Bateman > Cc: Jonathan Halliday ; hotspot-compiler- > d...@openjdk.java.net; core-libs-dev@openj

RE: RFR: 8207851 JEP Draft: Support ByteBuffer mapped over non-volatile memory

2018-11-09 Thread White, Derek
Hi Andrew, Given that there is platform-specific code, it would be good to be clear which platforms you are intending to implement as part of this JEP, and which platforms will need others to step in to support. I'm quite happy with your plan, but I'd like to see more JEPs being clear about pl

RE: PPC64: Poor StrictMath performance due to non-optimized compilation

2016-11-18 Thread White, Derek
Hi Joe, Although neither a floating point expert (as I think I've proven to you over the years), or a gcc expert, I checked with our in-house gcc expert and got this following answer: "Yes using -fno-strict-aliasing fixes the issues. Also there are many forks of fdlibm which has this