Portable version single threaded vs multi threaded installed version

[32d2d7ee]

I downloaded the ImageMagick-7.0.7-0-portable-Q16-x64.zip version.

When I run the portable version I see that only 1 thread is used, see info below.
I notice difference when using the -resize option.

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D:\Downloads\ImageMagick-7.0.7-0-portable-Q16-x64\convert.exe -version

Version: ImageMagick 7.0.7-0 Q16 x64 2017-09-03 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Visual C++: 180040629
Features: Cipher DPC HDRI
Delegates (built-in): bzlib cairo flif freetype jng jp2 jpeg lcms lqr openexr pangocairo png ps rsvg tiff webp xml zlib

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"D:\Downloads\ImageMagick-7.0.7-0-portable-Q16-x64\convert.exe" -bench 2 XXX_20170703_4720.JPG XXX_20170703_4720.PNG
Performance[1]: 2i 0.106ips 1.000e 18.891u 0:18.920

However when I use the installed vesion I get the results below. Both version are run on the same computer, a Windows 10 home.

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magick.exe -version

Version: ImageMagick 7.0.3-0 Q16 x64 2016-09-05 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Visual C++: 180040629
Features: Cipher DPC Modules OpenMP
Delegates (built-in): bzlib cairo flif freetype jng jp2 jpeg lcms lqr openexr pangocairo png ps rsvg tiff webp xml zlib

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 magick.exe -bench 2 XXX_20170703_4720.JPG XXX_20170703_4720.PNG
Performance[1]: 2i 0.112ips 1.000e 17.766u 0:17.844
Performance[2]: 2i 0.110ips 0.495e 18.219u 0:18.218
Performance[3]: 2i 0.112ips 0.500e 17.844u 0:17.861
Performance[4]: 2i 0.113ips 0.501e 17.734u 0:17.766
Performance[5]: 2i 0.113ips 0.502e 17.719u 0:17.731
Performance[6]: 2i 0.112ips 0.501e 17.797u 0:17.808
Performance[7]: 2i 0.112ips 0.499e 17.891u 0:17.899
Performance[8]: 2i 0.111ips 0.499e 17.891u 0:17.939

I noticed that with the installed version the OpenMP feature is extra.

• Is there a portable version with this feature.
• Is there a setting I shoud set or is the portable version only single threaded.