0000048: hdgeant crashing on athlon 32bit - MantisBT

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ID

Project

Category

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Date Submitted

Last Update

0000048

Hall D Offline

General

public

2011-02-18 13:49

2011-03-02 11:17

Reporter

davidl

Assigned To

davidl

Priority

normal

Severity

crash

Reproducibility

unable to reproduce

Status

resolved

Resolution

fixed

Platform

OS

OS Version

Summary

0000048: hdgeant crashing on athlon 32bit

Description

Richard jones reported this via phone call today.
hdgeant is crashing at the point it is reading in the B-field map with no descriptive error report.
The problem does not present when compiled in DEBUG mode.
The problem does not present when the ARCH is i686 (instead of athlon).
The problem does not present when executables compiled on other 32bit architectures are run on the athlon machine.

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Notes
(0000062) davidl (administrator) 2011-03-02 11:17	This problem stemmed from the fact that 32-bit Linux malloc does not align on 16 byte boundaries causing SIMD instructions to crash. This had been disabled when the ARCH was i686, but athlon machines set the ARCH to "athlon" causing SIMD instructions to be compiled in. Richard solved this problem and simultaneously enhanced the use of SSE2 and SSE3 to compile in things more customized for the current hardware.

Issue History
Date Modified	Username	Field	Change
2011-02-18 13:49	davidl	New Issue
2011-03-02 11:17	davidl	Note Added: 0000062
2011-03-02 11:17	davidl	Status	new => resolved
2011-03-02 11:17	davidl	Resolution	open => fixed
2011-03-02 11:17	davidl	Assigned To	=> davidl

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