How do I get memtest to see more than one core

I'm trying to use memtest86+ from the grub boot-loader. After running it I noticed that it said I had 1 core total. I have an Intel i5-4690K with 4 cores so that doesn't match up. How do I get it to see all 4 cores?

Screenshot: it won't let me add it directly so here's the link

1 Answer

At memtest start when you hear the *bleep*, you have to be quick and press F2 for SMP mode.

Then you will see all cores running...

But I don't know what difference this should make. It's still a memtest and not a cpu test...