19d310bb7SBarry Smith#!/usr/bin/env python 29d310bb7SBarry Smithfrom __future__ import generators 39d310bb7SBarry Smithimport config.base 49d310bb7SBarry Smith 59d310bb7SBarry Smithclass Configure(config.base.Configure): 69d310bb7SBarry Smith def __init__(self, framework): 79d310bb7SBarry Smith config.base.Configure.__init__(self, framework) 89d310bb7SBarry Smith self.headerPrefix = '' 99d310bb7SBarry Smith self.substPrefix = '' 109d310bb7SBarry Smith return 119d310bb7SBarry Smith 129d310bb7SBarry Smith def __str1__(self): 139d310bb7SBarry Smith if not hasattr(self, 'memalign'): 149d310bb7SBarry Smith return '' 15*a9acdec7SBarry Smith return ' Memory alignment from malloc(): ' + self.memalign + ' bytes\n' 169d310bb7SBarry Smith 179d310bb7SBarry Smith def setupHelp(self, help): 189d310bb7SBarry Smith import nargs 199d310bb7SBarry Smith help.addArgument('PETSc', '-with-memalign=<4,8,16,32,64>', nargs.Arg(None, '16', 'Specify alignment of arrays allocated by PETSc')) 209d310bb7SBarry Smith return 219d310bb7SBarry Smith 229d310bb7SBarry Smith def setupDependencies(self, framework): 239d310bb7SBarry Smith config.base.Configure.setupDependencies(self, framework) 249d310bb7SBarry Smith self.types = framework.require('config.types', self) 259d310bb7SBarry Smith self.languages = framework.require('PETSc.options.languages', self) 269d310bb7SBarry Smith self.compilers = framework.require('config.compilers', self) 279d310bb7SBarry Smith return 289d310bb7SBarry Smith 299d310bb7SBarry Smith def configureMemAlign(self): 309d310bb7SBarry Smith '''Choose alignment''' 319d310bb7SBarry Smith # Intel/AMD cache lines are 64 bytes, default page sizes are usually 4kB. It would be pretty silly to want that much alignment by default. 329d310bb7SBarry Smith valid = ['4', '8', '16', '32', '64', '128', '256', '512', '1024', '2048', '4096', '8192'] 339d310bb7SBarry Smith self.memalign = self.framework.argDB['with-memalign'] 349d310bb7SBarry Smith if self.memalign in valid: 359d310bb7SBarry Smith self.addDefine('MEMALIGN', self.memalign) 369d310bb7SBarry Smith else: 379d310bb7SBarry Smith raise RuntimeError('--with-memalign must be in' + str(valid)) 387ad10985SMatthew G. Knepley self.logPrint('Memory alignment is ' + self.memalign) 399d310bb7SBarry Smith return 409d310bb7SBarry Smith 419d310bb7SBarry Smith def configure(self): 429d310bb7SBarry Smith self.executeTest(self.configureMemAlign) 439d310bb7SBarry Smith return 44