made batch_size proportional to the number of GPUs actually used
made batch_size proportional to the number of GPUs actually used

letconex/MMT,letconex/MMT,ModernMT/MMT,ModernMT/MMT,ModernMT/MMT,letconex/MMT,letconex/MMT,letconex/MMT,ModernMT/MMT,letconex/MMT,ModernMT/MMT