Category : nvme

I have a Intel Optane P4801X. It is a NVMe storage device. In Linux, the physical sector size reported is 512 bytes: $ sgdisk -p /dev/nvme0n1 Disk /dev/nvme0n1: 195371568 sectors, 93.2 GiB Model: INTEL SSDPEL1K100GA Sector size (logical/physical): 512/512 bytes In Windows, the physical sector size reported is 4096 bytes: PS c:> get-disk | select ..

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My python script reads from HHD a huge file of ~5 Gb in compressed (compression=’gzip’) parquet format. So when finished its weight ~25 Gb (RAM – 64 Gb). It spends a lot of time (code below shows the way of reading). a=pd.read_parquet(DATA_DIR+’file_name.parquet’, engine=’fastparquet’) I have NVME SSD connected via PCI4. I completly newbie with I/O ..

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