use_gpu 与mode 2内存消耗增加而且时间增加

[chwang589]

这是gpu和mode2的方式结果
Run 1: Time: 3.35s, CPU Memory Increase: 886.50MB, GPU Memory Increase: 3.00MB
Run 2: Time: 3.43s, CPU Memory Increase: 892.12MB, GPU Memory Increase: 3.00MB
Run 3: Time: 3.46s, CPU Memory Increase: 898.88MB, GPU Memory Increase: 3.00MB
Run 4: Time: 3.79s, CPU Memory Increase: 905.62MB, GPU Memory Increase: 3.00MB
Run 5: Time: 4.00s, CPU Memory Increase: 900.00MB, GPU Memory Increase: 3.00MB
Run 6: Time: 3.99s, CPU Memory Increase: 893.25MB, GPU Memory Increase: 3.00MB
Run 7: Time: 4.36s, CPU Memory Increase: 904.50MB, GPU Memory Increase: 3.00MB
Run 8: Time: 3.69s, CPU Memory Increase: 895.50MB, GPU Memory Increase: 3.00MB
Run 9: Time: 3.43s, CPU Memory Increase: 906.75MB, GPU Memory Increase: 3.00MB
Run 10: Time: 3.38s, CPU Memory Increase: 900.00MB, GPU Memory Increase: 3.00MB
单独跑cpu的结果
Running BLASTN 10 times...
Run 1: Time: 2.67s, CPU Memory Increase: 708.75MB, GPU Memory Increase: 0.00MB
Run 2: Time: 2.86s, CPU Memory Increase: 748.12MB, GPU Memory Increase: 0.00MB
Run 3: Time: 2.78s, CPU Memory Increase: 744.75MB, GPU Memory Increase: 0.00MB
Run 4: Time: 3.00s, CPU Memory Increase: 750.38MB, GPU Memory Increase: 0.00MB
Run 5: Time: 2.66s, CPU Memory Increase: 695.25MB, GPU Memory Increase: 0.00MB
Run 6: Time: 2.70s, CPU Memory Increase: 694.12MB, GPU Memory Increase: 0.00MB
Run 7: Time: 2.72s, CPU Memory Increase: 690.75MB, GPU Memory Increase: 0.00MB
Run 8: Time: 2.71s, CPU Memory Increase: 690.75MB, GPU Memory Increase: 0.00MB
Run 9: Time: 3.11s, CPU Memory Increase: 760.50MB, GPU Memory Increase: 0.00MB
Run 10: Time: 3.37s, CPU Memory Increase: 758.25MB, GPU Memory Increase: 0.00MB

版本是master，用的是在ubantu18.2 gcc7.5 cuda10.1 的镜像中编译：
命令 blastn -query /home/wch/ncbi-blast-2.9.0+/query.fasta -db /home/ssd_2/wch/nc/human_genomic.01 -out results_756750_GPU.txt -evalue 1e-5 -max_target_seqs 10 -outfmt '7' -soft_masking true