diff --git a/app/test-bbdev/test_bbdev_perf.c b/app/test-bbdev/test_bbdev_perf.c
index 28d78e73a9c1..57b21730cab2 100644
--- a/app/test-bbdev/test_bbdev_perf.c
+++ b/app/test-bbdev/test_bbdev_perf.c
@@ -106,6 +106,8 @@ static int ldpc_llr_decimals;
 static int ldpc_llr_size;
 /* Keep track of the LDPC decoder device capability flag */
 static uint32_t ldpc_cap_flags;
+/* FFT window width predefined on device and on vector. */
+static int fft_window_width_dev;
 
 /* Represents tested active devices */
 static struct active_device {
@@ -881,6 +883,13 @@ add_bbdev_dev(uint8_t dev_id, struct rte_bbdev_info *info,
 	rte_bbdev_info_get(dev_id, info);
 	if (info->drv.device_status == RTE_BBDEV_DEV_FATAL_ERR)
 		printf("Device Status %s\n", rte_bbdev_device_status_str(info->drv.device_status));
+	if (info->drv.fft_window_width != NULL)
+		fft_window_width_dev = info->drv.fft_window_width[0];
+	else
+		fft_window_width_dev = 0;
+	if (fft_window_width_dev != 0)
+		printf("  FFT Window0 width %d\n", fft_window_width_dev);
+
 	nb_queues = RTE_MIN(rte_lcore_count(), info->drv.max_num_queues);
 	nb_queues = RTE_MIN(nb_queues, (unsigned int) MAX_QUEUES);
 
@@ -2583,7 +2592,8 @@ validate_ldpc_enc_op(struct rte_bbdev_enc_op **ops, const uint16_t n,
 }
 
 static inline int
-validate_op_fft_chain(struct rte_bbdev_op_data *op, struct op_data_entries *orig_op)
+validate_op_fft_chain(struct rte_bbdev_op_data *op, struct op_data_entries *orig_op,
+		bool skip_validate_output)
 {
 	struct rte_mbuf *m = op->data;
 	uint8_t i, nb_dst_segments = orig_op->nb_segments;
@@ -2613,7 +2623,7 @@ validate_op_fft_chain(struct rte_bbdev_op_data *op, struct op_data_entries *orig
 			abs_delt = delt > 0 ? delt : -delt;
 			error_num += (abs_delt > thres_hold ? 1 : 0);
 		}
-		if (error_num > 0) {
+		if ((error_num > 0) && !skip_validate_output) {
 			rte_memdump(stdout, "Buffer A", ref_out, data_len);
 			rte_memdump(stdout, "Buffer B", op_out, data_len);
 			TEST_ASSERT(error_num == 0,
@@ -2686,16 +2696,24 @@ validate_fft_op(struct rte_bbdev_fft_op **ops, const uint16_t n,
 	int ret;
 	struct op_data_entries *fft_data_orig = &test_vector.entries[DATA_HARD_OUTPUT];
 	struct op_data_entries *fft_pwr_orig = &test_vector.entries[DATA_SOFT_OUTPUT];
+	bool skip_validate_output = false;
+
+	if ((test_vector.fft_window_width_vec > 0) &&
+			(test_vector.fft_window_width_vec != fft_window_width_dev)) {
+		printf("The vector FFT width doesn't match with device - skip %d %d\n",
+				test_vector.fft_window_width_vec, fft_window_width_dev);
+		skip_validate_output = true;
+	}
 
 	for (i = 0; i < n; ++i) {
 		ret = check_fft_status_and_ordering(ops[i], i, ref_op->status);
 		TEST_ASSERT_SUCCESS(ret, "Checking status and ordering for FFT failed");
 		TEST_ASSERT_SUCCESS(validate_op_fft_chain(
-				&ops[i]->fft.base_output, fft_data_orig),
+				&ops[i]->fft.base_output, fft_data_orig, skip_validate_output),
 				"FFT Output buffers (op=%u) are not matched", i);
 		if (check_bit(ops[i]->fft.op_flags, RTE_BBDEV_FFT_POWER_MEAS))
 			TEST_ASSERT_SUCCESS(validate_op_fft_chain(
-				&ops[i]->fft.power_meas_output, fft_pwr_orig),
+				&ops[i]->fft.power_meas_output, fft_pwr_orig, skip_validate_output),
 				"FFT Power Output buffers (op=%u) are not matched", i);
 	}
 
diff --git a/app/test-bbdev/test_bbdev_vector.c b/app/test-bbdev/test_bbdev_vector.c
index b3e9d4bb7504..e48947b211ac 100644
--- a/app/test-bbdev/test_bbdev_vector.c
+++ b/app/test-bbdev/test_bbdev_vector.c
@@ -1050,6 +1050,20 @@ parse_fft_params(const char *key_token, char *token,
 			}
 		}
 		ret = ((err == NULL) || (*err != '\0')) ? -1 : 0;
+	} else if (!strcmp(key_token, "fft_window_width")) {
+		tok = strtok(token, VALUE_DELIMITER);
+		if (tok == NULL)
+			return -1;
+		for (i = 0; i < FFT_WIN_SIZE; i++) {
+			if (i == 0)
+				vector->fft_window_width_vec = (uint32_t) strtoul(tok, &err, 0);
+			if (i < (FFT_WIN_SIZE - 1)) {
+				tok = strtok(NULL, VALUE_DELIMITER);
+				if (tok == NULL)
+					return -1;
+			}
+		}
+		ret = ((err == NULL) || (*err != '\0')) ? -1 : 0;
 	} else if (!strcmp(key_token, "op_flags")) {
 		vector->mask |= TEST_BBDEV_VF_OP_FLAGS;
 		ret = parse_turbo_flags(token, &op_flags, vector->op_type);
diff --git a/app/test-bbdev/test_bbdev_vector.h b/app/test-bbdev/test_bbdev_vector.h
index 14b8ef2764ad..ba1d0d20f9ea 100644
--- a/app/test-bbdev/test_bbdev_vector.h
+++ b/app/test-bbdev/test_bbdev_vector.h
@@ -69,6 +69,8 @@ struct test_bbdev_vector {
 	};
 	/* Additional storage for op data entries */
 	struct op_data_entries entries[DATA_NUM_TYPES];
+	/* Vector FFT window width assumption. */
+	uint16_t fft_window_width_vec;
 };
 
 /* fills test vector parameters based on test file */
