do not cache temporary blob for uploading weight

[nihui]

No description provided.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (556b79c) 89.65% compared to head (12e1feb) 94.35%.

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #5266       +/-   ##
===========================================
+ Coverage   89.65%   94.35%    +4.70%     
===========================================
  Files         317      777      +460     
  Lines       96424   243759   +147335     
===========================================
+ Hits        86449   230009   +143560     
- Misses       9975    13750     +3775     

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[nihui]

cpu rss	baseline	pr	diff (avg = -0.89%)
squeezenet	26584.00	26572.00	-0.05%
squeezenet_int8	24584.00	24300.00	-1.16%
mobilenet	29876.00	29548.00	-1.10%
mobilenet_int8	12636.00	11812.00	-6.52%
mobilenet_v2	35588.00	35836.00	0.70%
mobilenet_v3	27288.00	27420.00	0.48%
shufflenet	15996.00	15320.00	-4.23%
shufflenet_v2	14184.00	14272.00	0.62%
mnasnet	27604.00	27600.00	-0.01%
proxylessnasnet	26632.00	26764.00	0.50%
efficientnet_b0	40792.00	40932.00	0.34%
efficientnetv2_b0	46068.00	45972.00	-0.21%
regnety_400m	29764.00	29268.00	-1.67%
blazeface	6240.00	6228.00	-0.19%
googlenet	100328.00	100400.00	0.07%
googlenet_int8	76708.00	75892.00	-1.06%
resnet18	131588.00	132248.00	0.50%
resnet18_int8	103488.00	103968.00	0.46%
alexnet	163688.00	163172.00	-0.32%
vgg16	549688.00	549700.00	0.00%
vgg16_int8	453156.00	366884.00	-19.04%
resnet50	210912.00	210888.00	-0.01%
resnet50_int8	148236.00	141196.00	-4.75%
squeezenet_ssd	87920.00	87908.00	-0.01%
squeezenet_ssd_int8	101448.00	100424.00	-1.01%
mobilenet_ssd	57000.00	56848.00	-0.27%
mobilenet_ssd_int8	21624.00	22196.00	2.65%
mobilenet_yolo	76672.00	75992.00	-0.89%
mobilenetv2_yolov3	63016.00	63752.00	1.17%
yolov4-tiny	170128.00	168696.00	-0.84%
nanodet_m	18340.00	19088.00	4.08%
yolo-fastest-1.1	12152.00	12232.00	0.66%
yolo-fastestv2	14880.00	14880.00	0.00%
vision_transformer	248572.00	248420.00	-0.06%
FastestDet	21368.00	21384.00	0.07%

gpu rss	baseline	pr	diff (avg = -77.5%)
squeezenet	14188.00	2864.00	-79.81%
mobilenet	20964.00	2328.00	-88.90%
mobilenet_v2	18748.00	2984.00	-84.08%
mobilenet_v3	23052.00	4888.00	-78.80%
shufflenet	8588.00	1692.00	-80.30%
shufflenet_v2	11468.00	1572.00	-86.29%
mnasnet	22464.00	3188.00	-85.81%
proxylessnasnet	21776.00	3432.00	-84.24%
efficientnet_b0	26996.00	5140.00	-80.96%
efficientnetv2_b0	36532.00	8440.00	-76.90%
regnety_400m	19380.00	2308.00	-88.09%
blazeface	1232.00	908.00	-26.30%
googlenet	86312.00	5956.00	-93.10%
resnet18	120028.00	1972.00	-98.36%
alexnet	228852.00	932.00	-99.59%
vgg16	710676.00	1984.00	-99.72%
resnet50	194488.00	2172.00	-98.88%
squeezenet_ssd	80224.00	10468.00	-86.95%
mobilenet_ssd	31416.00	3408.00	-89.15%
mobilenet_yolo	28656.00	5392.00	-81.18%
mobilenetv2_yolov3	21868.00	5176.00	-76.33%
yolov4-tiny	118216.00	7108.00	-93.99%
nanodet_m	8700.00	4956.00	-43.03%
yolo-fastest-1.1	6224.00	4024.00	-35.35%
yolo-fastestv2	4304.00	4232.00	-1.67%
vision_transformer	350832.00	5220.00	-98.51%
FastestDet	4100.00	1796.00	-56.20%