I have a simple network consisting of a conv2d following by maxpool2d.
My maxpool2d has padding of (2,2) and stride is (1,1) and kernel_size is (5,5) and as per the documentation If :attr:`padding` is non-zero, then the input is implicitly zero-padded on both sides
Now when I print my input to pool this is how it looks (2,4,7,7 is the input size)
          [ 0.0489,  1.6420,  0.2287, -1.0550, -1.1927, -0.8047,  0.0784],
          [ 3.1435, -1.5051, -1.0993, -1.2291,  1.9592,  0.9374,  1.0278],
          [ 4.1902, -1.6815, -1.4005,  0.3315,  0.4801,  0.6345,  2.0060],
          [-0.3247, -2.6899, -1.1491,  3.6877,  3.4306,  2.6198,  0.1040],
          [-0.5162,  0.6600,  2.8160,  5.4908,  3.5650,  2.4575,  1.6125],
          [-5.6328, -0.9014,  1.5804,  2.9726,  2.2904,  0.5041,  3.1346]],

         [[-0.1914, -2.8677,  0.0729,  2.4558,  4.0144,  1.8283,  0.5931],
          [ 0.1440,  0.3167, -0.2808,  0.9678,  3.0057,  0.9184,  0.6368],
          [ 3.9118, -1.1746,  0.4501, -1.8484,  0.5270,  2.2912,  1.9351],
          [ 2.6868,  0.3502,  1.0592,  1.5951, -0.4269,  0.0184,  1.6321],
          [-0.4935, -0.2281,  1.2582,  5.1018,  2.0337,  4.3594,  1.0276],
          [ 2.2973,  0.4393,  1.2802,  2.7683,  3.5030,  0.4795,  3.1873],
          [-1.6443,  0.5248,  1.1553,  2.5217,  1.1599,  5.2611, -0.7326]],

         [[-3.9278, -3.7870, -1.1932,  1.3942,  4.4397,  1.5615, -0.1242],
          [-1.4697, -2.1559, -0.3979, -0.3652,  1.0954,  0.1458, -0.3445],
          [ 3.2035, -3.2459, -1.2674, -1.8574,  0.8088, -0.2128,  1.6267],
          [ 3.3607, -1.1613, -1.5472,  0.2017,  0.0222,  0.2070,  2.4390],
          [ 0.2863, -1.8395, -1.5054,  2.4502,  3.5512,  3.7417, -0.4721],
          [-0.5731,  0.1661,  1.1135,  4.8935, -0.7547,  1.6938,  1.6246],
          [-3.2584,  0.2666,  2.7086,  2.9518,  2.2872,  2.5348,  0.3620]],

         [[-4.0493, -4.8643, -0.7076,  2.3171,  5.8105,  2.9847, -2.6179],
          [-2.4079,  0.6828, -0.6392, -0.5281,  1.1452,  1.7984, -0.5071],
          [ 1.6854, -1.5713, -2.0388, -2.2313,  1.1435,  2.6450,  1.4343],
          [ 3.2826, -0.0465, -0.6639,  0.1978, -0.4772, -0.7204,  1.9651],
          [-0.2371, -2.9784, -1.3908,  2.1289,  4.9562,  4.0141, -0.4528],
          [ 1.6566, -1.1490,  0.1557,  3.4228,  4.1824,  1.4596,  2.2735],
          [-4.5200, -0.5847,  1.4765,  2.0553,  3.2786,  2.6815, -0.7931]]],


        [[[ 2.1042,  3.3742,  0.5247,  0.8450,  0.2137, -0.1025,  1.3134],
          [ 1.0647,  0.8145,  2.5763,  1.5895,  0.5657, -2.8018, -1.0151],
          [-1.0696,  1.5710,  0.5461,  0.1239,  1.1746,  0.8900,  0.8370],
          [ 3.2110,  3.5812,  0.6116, -0.2446,  0.8808, -0.7343, -2.4390],
          [ 1.7637,  3.0690,  4.1770,  1.4025,  0.7210, -3.2826, -3.2330],
          [ 5.7765,  6.8915,  4.2196,  2.6918, -0.9390, -2.1477, -2.2693],
          [ 3.8918,  0.8171,  4.3219,  1.7632, -3.7690, -4.8244, -4.2342]],

         [[ 2.2697,  2.8911,  3.0222, -0.1710,  1.7580,  0.7359,  2.5586],
          [-0.8067,  1.7193,  0.8415,  0.9246,  0.9927,  0.9173, -0.7195],
          [ 0.8351,  1.7259,  2.4022,  2.6045,  2.1432,  0.5825,  1.1809],
          [ 2.3973,  2.6272,  1.1421,  1.1446,  2.9422, -0.9794, -1.4130],
          [ 1.9513,  3.1972,  3.0604,  0.2871, -0.1983, -0.5607, -1.0176],
          [ 3.8872,  3.6584,  3.3600,  2.3792,  0.1604, -2.4171, -0.4698],
          [ 2.5361,  4.2509,  3.3117,  3.2684, -0.5432, -2.7799, -1.8438]],

         [[ 0.5719,  3.5698,  4.4450,  0.6703, -0.7591, -0.3706,  0.6389],
          [-1.2735,  1.0070,  0.0426,  1.1367,  0.1103, -1.4961, -2.4907],
          [ 2.8407,  3.4860,  0.5163,  0.9328,  1.9300,  1.5186, -1.0641],
          [ 1.7709,  1.3212,  1.1954,  1.3916,  0.5054, -1.4010, -1.6475],
          [ 3.0165,  2.8974,  2.8397, -0.0489,  0.5612, -3.9587, -2.1370],
          [ 4.8533,  6.0433,  4.3979,  2.2355,  0.6366, -2.7814, -1.8583],
          [ 2.5606,  3.4099,  4.3756,  4.0021, -2.2347, -2.7669, -3.4700]],

         [[ 2.5396,  3.8363,  2.3450,  0.6624, -0.2863,  0.3438,  1.9313],
          [ 0.1720,  1.0229,  2.3096,  0.9799, -1.3438, -2.1497, -2.2450],
          [ 0.2471,  1.9793,  1.8274,  0.7245,  0.3894,  0.7552,  1.4527],
          [ 3.4289,  2.2729, -0.5627,  0.5417,  1.3856, -1.4114, -1.7625],
          [ 2.4366,  4.1636,  2.5470,  0.7687, -0.3675, -2.0235, -2.7498],
          [ 6.1177,  6.5956,  3.6907,  2.4760, -0.5046, -2.4810, -1.7314],
          [ 3.7165,  3.0131,  4.2347,  2.3551, -1.5218, -3.7080, -4.3321]]]],

and the output of pool is also (2,4,7,7) :
          [ 4.1902,  4.1902,  5.4995,  5.4995,  5.4995,  5.4995,  5.4995],
          [ 4.1902,  4.1902,  5.4995,  5.4995,  5.4995,  5.4995,  5.4995],
          [ 4.1902,  5.4908,  5.4908,  5.4908,  5.4908,  5.4908,  3.5650],
          [ 4.1902,  5.4908,  5.4908,  5.4908,  5.4908,  5.4908,  3.5650],
          [ 4.1902,  5.4908,  5.4908,  5.4908,  5.4908,  5.4908,  3.5650],
          [ 2.8160,  5.4908,  5.4908,  5.4908,  5.4908,  5.4908,  3.5650]],

         [[ 3.9118,  3.9118,  4.0144,  4.0144,  4.0144,  4.0144,  4.0144],
          [ 3.9118,  3.9118,  4.0144,  4.0144,  4.0144,  4.0144,  4.0144],
          [ 3.9118,  5.1018,  5.1018,  5.1018,  5.1018,  5.1018,  4.3594],
          [ 3.9118,  5.1018,  5.1018,  5.1018,  5.1018,  5.1018,  4.3594],
          [ 3.9118,  5.1018,  5.1018,  5.2611,  5.2611,  5.2611,  5.2611],
          [ 2.6868,  5.1018,  5.1018,  5.2611,  5.2611,  5.2611,  5.2611],
          [ 2.2973,  5.1018,  5.1018,  5.2611,  5.2611,  5.2611,  5.2611]],

         [[ 3.2035,  3.2035,  4.4397,  4.4397,  4.4397,  4.4397,  4.4397],
          [ 3.3607,  3.3607,  4.4397,  4.4397,  4.4397,  4.4397,  4.4397],
          [ 3.3607,  3.3607,  4.4397,  4.4397,  4.4397,  4.4397,  4.4397],
          [ 3.3607,  4.8935,  4.8935,  4.8935,  4.8935,  4.8935,  3.7417],
          [ 3.3607,  4.8935,  4.8935,  4.8935,  4.8935,  4.8935,  3.7417],
          [ 3.3607,  4.8935,  4.8935,  4.8935,  4.8935,  4.8935,  3.7417],
          [ 2.7086,  4.8935,  4.8935,  4.8935,  4.8935,  4.8935,  3.7417]],

         [[ 1.6854,  2.3171,  5.8105,  5.8105,  5.8105,  5.8105,  5.8105],
          [ 3.2826,  3.2826,  5.8105,  5.8105,  5.8105,  5.8105,  5.8105],
          [ 3.2826,  3.2826,  5.8105,  5.8105,  5.8105,  5.8105,  5.8105],
          [ 3.2826,  3.4228,  4.9562,  4.9562,  4.9562,  4.9562,  4.9562],
          [ 3.2826,  3.4228,  4.9562,  4.9562,  4.9562,  4.9562,  4.9562],
          [ 3.2826,  3.4228,  4.9562,  4.9562,  4.9562,  4.9562,  4.9562],
          [ 1.6566,  3.4228,  4.9562,  4.9562,  4.9562,  4.9562,  4.9562]]],


        [[[ 3.3742,  3.3742,  3.3742,  3.3742,  2.5763,  1.5895,  1.3134],
          [ 3.5812,  3.5812,  3.5812,  3.5812,  2.5763,  1.5895,  1.3134],
          [ 4.1770,  4.1770,  4.1770,  4.1770,  4.1770,  1.5895,  1.3134],
          [ 6.8915,  6.8915,  6.8915,  6.8915,  4.2196,  2.6918,  1.1746],
          [ 6.8915,  6.8915,  6.8915,  6.8915,  4.3219,  2.6918,  1.1746],
          [ 6.8915,  6.8915,  6.8915,  6.8915,  4.3219,  2.6918,  0.8808],
          [ 6.8915,  6.8915,  6.8915,  6.8915,  4.3219,  2.6918,  0.7210]],

         [[ 3.0222,  3.0222,  3.0222,  3.0222,  3.0222,  2.6045,  2.5586],
          [ 3.0222,  3.0222,  3.0222,  3.0222,  3.0222,  2.9422,  2.9422],
          [ 3.1972,  3.1972,  3.1972,  3.1972,  3.0604,  2.9422,  2.9422],
          [ 3.8872,  3.8872,  3.8872,  3.6584,  3.3600,  2.9422,  2.9422],
          [ 4.2509,  4.2509,  4.2509,  4.2509,  3.3600,  3.2684,  2.9422],
          [ 4.2509,  4.2509,  4.2509,  4.2509,  3.3600,  3.2684,  2.9422],
          [ 4.2509,  4.2509,  4.2509,  4.2509,  3.3600,  3.2684,  0.1604]],

         [[ 4.4450,  4.4450,  4.4450,  4.4450,  4.4450,  1.9300,  1.9300],
          [ 4.4450,  4.4450,  4.4450,  4.4450,  4.4450,  1.9300,  1.9300],
          [ 4.4450,  4.4450,  4.4450,  4.4450,  4.4450,  1.9300,  1.9300],
          [ 6.0433,  6.0433,  6.0433,  6.0433,  4.3979,  2.2355,  1.9300],
          [ 6.0433,  6.0433,  6.0433,  6.0433,  4.3979,  4.0021,  1.9300],
          [ 6.0433,  6.0433,  6.0433,  6.0433,  4.3979,  4.0021,  0.6366],
          [ 6.0433,  6.0433,  6.0433,  6.0433,  4.3979,  4.0021,  0.6366]],

         [[ 3.8363,  3.8363,  3.8363,  3.8363,  2.3450,  1.9313,  1.9313],
          [ 3.8363,  3.8363,  3.8363,  3.8363,  2.3450,  1.9313,  1.9313],
          [ 4.1636,  4.1636,  4.1636,  4.1636,  2.5470,  1.9313,  1.9313],
          [ 6.5956,  6.5956,  6.5956,  6.5956,  3.6907,  2.4760,  1.4527],
          [ 6.5956,  6.5956,  6.5956,  6.5956,  4.2347,  2.4760,  1.4527],
          [ 6.5956,  6.5956,  6.5956,  6.5956,  4.2347,  2.4760,  1.3856],
          [ 6.5956,  6.5956,  6.5956,  6.5956,  4.2347,  2.4760, -0.3675]]]],


Could someone please explain to me why the last value is negative the -0.3675?? Should it not be 0 as the max as it is zero padded? The last block contains all negative values with zero padding in the pool kernel