Turbo Boost Disabler for Mac OS XThis kernel extension DisableTurboBoost.kext lets you disable present on latest Intel Core processors running Mac OS X. AbstractTurbo Boost technology provides automatic CPU over-clocking in certain situations where there is no risk of overheating the CPU. Unfortunately it has nasty effect of ruining various OpenCL and.As observed Turbo Boost triggers when process is occupying 100% of single CPU core, while other CPU cores are idle. However when all CPU cores are occupied, Turbo Boost doesn't trigger as it would cause CPU overheat.
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Turbo Boost Switcher Pro is a little application for Mac computers that allows you to enable and, respectively, disable the Turbo Boost feature. The tool installs a precompiled kernel extension (32- or 64-bit, depending on your system) that updates the Turbo Boost MSR register, so that it will ask for your admin password when using it. Turbo Boost Switcher Pro is a little application for Mac computers that allows you to enable and, respectively, disable the Turbo Boost feature. The tool installs a precompiled kernel extension (32- or 64-bit, depending on your system) that updates the Turbo Boost MSR register, so that it will ask for your admin password when using it.
As a result parallel tasks performance running on all CPU cores does not scale relatively to number of cores, i.e. For 4 core i5 CPU OpenMP program running on all 4 cores is only 3x faster than 1 single core version.Disabling Turbo Boost makes CPU run same clock regardless of cores occupation, therefore we get desired close to 4x speedup when running 4 cores OpenMP program vs 1 core.This program implements modification of MSR CPU register responsible for Turbo Boost control as described in Prerequisiteswith Command Line Tools is required to compile this module.Command Line Tools are available as extra add-on from Preferences Downloads of Xcode 4.3 or newer, installer option on Xcode 4.2 or older. Separate download does now require Xcode to build this project. Usage. make. make load to load and disable Turbo Boost (will ask for admin privileges). make unload to unload and re-enable Turbo Boost (will ask for admin privileges)OS X YosemiteIn OS X 10.10 (Yosemite), Apple has introduced a new security requirement calledkext signing.
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February 2023
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