256 buckets vs 128 #293
Replies: 6 comments 19 replies
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after feedback on discord and given that many ppl want to use ramdisk with 128 GiB RAM, I will increase default buckets to 256 |
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using a ramdisk is the WRONG way to go about it..... |
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I've found 512 buckets to be the fastest setting on my core bottlenecked system (4c/4t, 16gb ram w/ NVMe drive). Total plot time ~6900s. Likewise, I found 64 buckets to be the fastest on my I/O bottlenecked system (Macbook Pro 6c/12t, 16gb ram w/ NVMe over Thunderbolt3). Total plot time ~6600s. |
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i assume higher buckets decreases system memory usage? just eyeballing my process now at least. now not sure it's coincidence but looks like my phase 1 is waaay faster. about 100 seconds. see how it impacts overall plot time, promising so far hmmmm buuut looks like i might lose every second saved in p1, by longer p2 hahaha edit: oooh yucky, no, phase 3 very bad now hahah. P3-2 is still amazing, P3-1 tanks HARD |
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I have 384G RAM and set 300G ramdisk ,128 buckets a .... it's not 32 buckets ,about 90 % cpu time 128 buckets and 256 buckets a , let's try 512 buckets i didn't finish plot ,but i think the data is well enough makes sense |
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It looks like using 256 buckets is about 15% faster for my setup using a ramdisk and the latest build (June 13). Previously I was getting around a 1650s average. I am now getting 1408s avg. Without a ram disk I was getting about 2700s. System is 5950x (x570 chipset) with 128G ram. tmp1 is a PNY 3040 2TB, tmp2 is 110G ram disk. Destination is external seagate usb 3.0. The first run is a little faster and I think it is because the subsequent plots are copying the file. I have noticed that even when specifying 12 threads, all 32 cores are busy, but at only about 70-85%. I have not tried going over 12 as I wanted to ensure enough memory.
Nice work on this plotter! |
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I've heard that 256 buckets is faster for some, let's figure out if we should make it the default.
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